I think this is really a fallacy though. Take SF4 for example…
neutral standing + 6 buttons. 2 throws, 1 taunt, 1 FA move. 10 total.
crouching + 6 buttons. 6 moves total.
neutral jumping + 6 buttons. 6 moves total.
angled jumping + 6 buttons. 6 moves total.
at least 1 Super.
at least 1 Ultra.
Without any specials or special normals, every character has at least 30 moves right off, not including EX variations (EX tatsu is a completely different move to normal tatsu).
If a character has different properties depending on the button pressed (Gouken’s fireballs for example), those would count as 3 additional moves as well.
So… even 2D games have a LOT of moves in them if you really look at it.
@JDR: Is SC4 worth the purchase? I used to play SC2 pretty well, but SC3 was a disappointment for me. Haven’t touched SC4 save for the demo, which really didn’t give you a clear idea if the game was great or not.