Just a quick background: I played SF2, Turbo, SSF2, Alpha, and Alpha 2 when I was 7-10 years old, back in the day. More than a decade has passed and, after seeing SF4 trailer, I got back on SF2 Turbo.
As you can tell by my name, I am a fan of Guile. Partly because I am more able to adapt to his defensive style of play. And partly because some of the other characters special moves are tricky to do. Ken/Ryu/Sagat’s Shoryuken/Tiger Uppercut, Sagat’s Tiger knee, and Zangief’s piledriver come to mind. I simply can’t execute those maneuvers on the keyboard. Is it easier to do them on D-pads?