I greatly disagree.
My Ravens franchise and my Raiders franchise and my fantasy Bucs franchise all feel very different in the passing game.
Completing passes with Russell is a nightmare (as is Josh Freeman...), while using Sanchez is more reliable if I call a west coast style game, while Flacco is streaky. Pat White let's me fear the blitz less...though when I escape and throw the ball - pray.
On defense - I feel the difference between fast and slow LBs. I feel the difference between the 3-4 and 4-3 (I hate the 4-3). I feel the difference between having a good D-Line and one that's pretty darn average.
Wow - sounds like the DBs are too good! Even the best DBs in real life give up completions and occassional big plays. This sounds like they stop anything and everything that comes their way.
Heck, I can't go 16-0 in Madden. I guess I suck or have made my sliders too hard for me *shrug* I'm currently 1-2 with my Raiders franchise, 4-2 with my Ravens franchise, and 2-1 with my fantasy Bucs franchise.