Definately, variation is the key - the only teams I've used online in ranked player matches, bearing in mind I've played around 40, are Valencia, Sevilla, West Ham and Udinese and EVERYONE else I've played have been either Inter, Chelsea, Barca, Arsenal or Man Utd...when people are winning with those teams when playing against lesser teams it proves nothing, just that you rely on 90+ stats to help you win games. Sure its fine to play as Barca or Chelsea, but when you continuosly do it?
When your playing as a lesser team, Its worth it though, the satisfaction of stuffing 'them'. I managed to beat a guy 3-0 who was playing as Man Utd whilst I was Sevilla The joke of person gave me negative feedback, just for sour grapes. (He was one of those serial gloaters - he always watches the replay for every single shot he has) I reply to him asking him why? No response.
Sure this is a moan post,
I just felt like elevating this off my mind - there are more teams than INTER, BARCA, REAL & CHELSEA...
(I've found a lot of people can't bear the old 5-4-1 counter attack, its my winning formula with Sevilla - pity you don't get more rank points for using worse off teams!)