What is the matter with you ?
You surely must understand the fundemental differences betweem the two titles that making them both completely different to each other ?
If you cant see that, with all due respect, you have nothing to debate.
PES is PES, Fifa is Fifa. Apart from the fact they are both Football titles, that is the only real comparison you can make. Until EA produce a Fifa game that totally places all the emphasis on the individualism of the players it replicates, then you simply cannot compare them.
They both come from totally different angles. Both are excellent games, but please appreciate them both for what they are.
PES will never be able to compete with EA's stunning visuals, animations, presentation, authenticity, licences, etc etc. And Fifa, unless EA changes the way they approach their game, which I beleive they dont need to as the market has a place for both titles and representations, then EA cant compete with Konami's total individualistic player simulation based title.
The arguement about which is better lies with the gamer, and what he/she prefers to play. Remove the Fanboyism, and both titles deserve the respect for what they are.