@JB et al
What is the better game online & why??
Any answer I give will be subject to a load of disagreements and pot-shots. I'm with CW, it's quite intimidating to give your opinion because you have to have total blind love for either PES2008 or EURO 2008, if you have issues with something you suddenly "hate it", have "changed your mind" or "haven't got a girlfriend" (?!)...
Saying that, I do love EURO 2008 despite the flaws. The way I see it, and it's kind of hard to explain... FIFA is a solid game but with one main flaw - the response times - whereas UEFA I feel is almost a perfect football simulation but with major flaws (online), those being the goalkeepers parrying far too much and giving far too many goals away. The scorelines are daft.
Perhaps another way of saying it is, take the flaws out of FIFA and take the flaws out of EURO, and EURO is
by far the better game for me, regardless of the fact that the EURO flaws would probably outweigh the FIFA flaws on their own.
To answer your question (sorry for babbling), I would say EURO 2008 is the better online game. See
THIS POST for why I think that. The reaction times are better*, the player control is better (nowhere near as many players get "locked on" to a ball, more freedom all round) and your AI really helps you out with some clever runs. I think it plays a great game of football. The scorelines are largely stupid, too many goals go in, which is of course a major fault. I'm not blind. But apart from that I think it's a big improvement.
I would rather win a game 8-3 and have total control of the players, with the odd goalkeeper error thrown in, than win 2-0 on FIFA thanks to the opposition's defenders not doing what he told them to and the goalkeeper making the same mistakes they make in EURO (my last six or seven goals conceded in FIFA were rebounds off the keeper or rebounds off the post, two things almost everybody is complaining about in EURO).
*EDIT: One thing I can't really comment on is lag, because I've had quite a few laggy games. When you get a laggy game the response times revert to FIFA-style response times, and I would say I've had an 80/20 split of laggy games/non-laggy games so far. But when the connection is good, the difference (between FIFA and EURO) is huge, for me.