First, i got to say one thing : i was part of Pesuniverse for 20 and 21. But the database part only, and i can say it comparison any OF : me and me teamate has done probably the more detailled database since there's PES on PS4.
I redo every Bundesliga faces in high quality on PES 20 + promoted on 21, meaning i check players from every angles. Some players tooks me 45 minutes, no joke.
I've re-do appearence from practically all created teams and stats for at least 15 Others Euro (not at the launch, i'll explain later), all MLS teams, and copied J-League from Mobile with corrections.
Stats were done by Huigoman for Bundes and Libertadores, some on MLS as the basis we converted from PES 2019 was totally awful, all that on the 20 and on 21 before he left the team for the V5.
For Others Euro, i asked help from Barca4eva for 7 teams +-, and also an Austrian editing teams, and one other editor Gronkaroglan done +-6 teams...
But i checked after, there were so much errors especially in Austria teams that i've gotted to re-do them myself. All players got a weird issues (all got 10 special skills assigned) etc.
I redo all from scratch until the V7 (i didn't worked on V6 btw, i don't even know what it looks like).
So before telling "Pesuniverse etc.", be careful : you don't know what they (more "He") hide from you, but we were a VERY small team for data and reached some levels that some others teams of 10 guys for the database didn't, with all up to date (especially on PES 2020)
But about kits, i agree : the best kits were from La Liga 1 and 2 (Carrasco was one of the best around) and perhaps MLS but not for every teams at all.
They got a team of Kitmakers... But not editors or creator, only me and some helping mate for 10-15 teams on 120 to complete.
Well it was a full time job. The thing was, i gotted MORE to do, at least 5 times. No joke. There's one guy applying kit at the launch, so 10 days of work, then nothing to do, all the kits to replace was given to me.
And it wasn't to make money, i send my O.F.: i received three gift for editing 8-10 hours a day, sometimes 12 hours and half a week of resting, but i worked months for nothing / I'll take an example : I did a very final version for PES 2020, with EVERY transfers IG for created leagues, and some for AFC (with duplicates removed), even Liga Aguila, Colombian league who were left with May 2019 rosters and plenty of errors. I re-done them, because i thinked the licence was completely lost, and i was happy to copy them over PLA league, well to get a real South America part of the game... But for nothing.
He NEVER released it, and i understood it only when some people asked me in PM "where is the V7 of PES 2020?" (i always sended to them for free of course) also i wasn't paid at all. Just received 2 gift the first year, nothing the last. I decided to release the V7 of PES 2021 for myself, he released it 10-15 days later... Again i was pissed.
I told the boss i don't wanted gift anymore. I didn't came for that, but if you want to send me something here's my Paypal account, send what you want. I didn't even received one penny, and the OF from V7 was 85% mine as i corrected all i could, even MLS stats, transfers, recreated many Others Euro from scratch, assigned kits, J-League updated stats from Mobile and transfers etc.
So in brief: i received nothing, and did more than ever. So fuck all of them from the "not editing" team, some like Klashmann or Carrasco, and people helping, should leave. That's what i did. Now i'm good alone, but when i learned that Pesunites boss was the previous guy from Pesfan.it, i decided to make a deal if i continue to edit (2021 or Efootball if it worth it, if at least you can add a Bundes. They kept a lot from those last year so it's not impossible they left the same data system)
Well we talked togheter and we agreed about a lot of thing. the Pesuniverse boss didn't supported Pesunites and put everyone under pressure, makes people left, it's all his fault if now, there's no more editor that can create a team with him. Every actives teammates complained.
@janguv say what you want about kits, but don't dare say a thing about database and created teams

Honestly i checked others OF and it didn't reached half of the implication (and level of expertise) me and Huigoman did on that OF. But to me even with that level reached : i couldn't finish and i gotted enough. There's way too many teams to complete on PES 2021.
More than on PES 2020 by far, even more details on players.
Just to tell how i was about detailsor example, i use transfermarkt value and compare to IG players sharing the same profile, then i check on the FM pre-game editor, if the player got "0" in every values, i always found a vid of the player and try to represent him as i discern his strengths and weaknesses.
When i don't found an height, i compare with multiple players, check vids etc.
And i knowed the limitations in terms of stats and standards from PES, i already talked about it.
Well, to be honest, from people trying tons of OF, on Twitter i got a lot of contact and they said to me many kind thing they really thinked (also Schiztophonic who said to the Pesuniverse account "you got the best editor you can get with Sensei-Vialli" another way to said "be careful to not loose him or you're done" also at least on PES 2020 5 people saying it's the best Bundes they saw on a PES man made, i answered "with PESEDIT from 2011-2013 then", i was happy that my work pleased to people, at least one good thing to keep in mind.
So yes, i agree about "not the best OF" but mainly because of kits, the boss tried to convince me that their kits were the best, i founded him some kits from Kit Man Cal PL and then some of PESuni kits and said "you really think all kits are better? It's just Spanish kits which are the best with Carra, think about the rest and respect the others", i was very frank with him.
Now, i continue on my basis, but i never wanted MLS and was a bit forced to do it. Well, teams are funs with good players, but the full league isn't possible to add on PLA. That's why i prepared Colombia liga to replace it, thinkin' it was lost. But the boss was an MLS fans, i remember we were five when i joined, and everyone said "MX". The boss said a bit later "we will do MLS : we got kits", i said "Erzo MX is with us, we also got MX kits no?"
Fake answer lol. He just wanted to play with MLS.
Well i said enough, but i could say more : in brief i'm not with them anymore, but now you can have an idea of how an editor, at least one like me, is doing on and what he receive really. I received 250 euro in total for 2 years in PS money (FFS i worked like a full time job and i'm not a gamer! i still got some unused euros on account) and a PS4 controller. Not that bad, and he said people don't understand that i got to send gift to everyone, so that's were to money goes!
Fake, as all i received was an FM account, and i only use FM for editing not even playing so... It's like a tool for working, same as the controller : the other died because of too much editing.
Sorry for the very long post, but i gotted things to, how should i say, "restore" in people mind because they don't know how Pesuniverse work, and it's not because you're on the team that you agree with them. I just wanted help to build a good OF for people, no joke, and didn't thinked about money at all.
EDIT
Whatever, i'm not the tool of anyone now, used for my passion of editing (data and players details especially) and i won't fall again. If i still got time and envy, i will makes some deals to use some kits from others teams instead of my data and creation.
But since that EDITING TEAMS war, it's painful. I didn't grown with that mentality : but the one were people shared their stuffs for everyone, like i did.