I'm sorry but the power of the hardware has everything to do with it; what FIFA 09 on PS3/360 does can't be done on PCs, let alone PS2s. Yet PES2008 is not just the same on PS2/PS3, it's actually BETTER on the PS2. Because (in my eyes, this is my opinion and obviously that will differ), the PS2 (and PSP) suits the style of gameplay the best. Fast-paced (I'm trying not to say "arcade" because I know people hate that), and nowhere near as advanced as it should be by now. But again, the current engine is good enough for some people, and that's fair enough.
For further evidence against your point, see the FIFA thread where there's a quote from EA explaining why the game has to be totally different on PC to PS3/360. People are in uproar about it, getting a worse game on PC, but he explains it as simply as possible ( as it relates to FIFA I've spoilered it

).
Put simply; your average PC is one or two cores, the next-gen consoles have six cores, and the players apparently make a thousand decisions a second on next-gen consoles (I say apparently because they still make dumb decisions and EA have been known to exaggerate in the past). It's simply not possible to port that gameplay engine across to anything else, apart from maybe an
extremely high-end PC. And before someone says "what about games like Crysis"; look past the graphics. 21 players (that's the human-controlled player excluded) making a thousand decisions a second is a lot more work than you walking around and shooting, with a couple of enemies dotted about.
(And by the way, to anyone who thinks that criticism of PES like this is just "moaning" and the forum can do without it, including Paulo and you Sindii, I apolgise; but you have to bear in mind that if I - or "we" if you include the others who complain about the game - really hated PES, we simply wouldn't talk about it. We would disappear off the forum. I loved PES/WE, it gave me hours upon hours of happiness. We wouldn't complain if we didn't love PES/WE so much a short time ago, and if we didn't want to see it become a game that we love to play once again.)