I HATE freestlye play. Personally I think it's retarded. For me SIM all the way. Freestyle guys, at least the one's I have played as someone has said earlier, have a few money plays they like to run, and do the same thing over and over.
Once you figure it out, it's gravy.
Did some tourney not too long ago, nothing like super competitive it was here at work for prizes and it seemed like everyone I played was a free syle player. Ran the same defense, did the same shifts, ran the same type of plays, etc...
Needless to say, it took me about a quarter to figure it out, and they all got their asses handed to them.