I had FIFA 13 this year and really didn't like ultimate team. Master league online is the PES equivalent, and is much better IMO. I won the first division on FIFA13 after just 1 month and I hate the fact that you can just buy yourself a better team with real money. Ultimate teams transfer pricing is stupid aswell, you can get a team 3 teams of 80's for the same price as a 74 striker? It's none realistic and also not exciting. Pes's master league for me is more fun as it takes much longer to get a good team and you really feel like you've worked hard for it.
However FIFA's ability to be able to buy/sell players from your PC or mobile was a great addition, I did really enjoy that and think Konami could learn from that.
Pes has no lag or freezing issues for me where as fifa did.
Pes online games end up 2-1, 3-0, 1-0, 4-1 etc. Where as fifa's ended up 11-2, 8-7, 6-9, 9-2 etc - I didnt like that.
Pes isn't perfect, there is a problem with defenders ability to defend long balls and that has kinda made the online experience kinda 1 dimensional although with practice it's counterable.
Fifa's pro club and be a pro online really took Konami's idea and made a good thing out of it, I enjoyed that when it worked.
Fifa offline was also much better for me, I really enjoyed FIFA offline, however online sucks for FIFA and I sent it back after 6 weeks saying it didn't work as advertised and then I bought pes.
I'd had every other pes before and glad I came back, it is however far from perfect also.