Yea, Black Tiger pretty much covered it all in this comparison (linked to above). I will defer to that comparison. I will say, however, that there are a few stages in the PCE version that kind of bug me. I never liked the way the Ryu stage looked on the PCE. It seems like some detail was lost in the floor and the sky. The Guile, Blanka, and M.Bison/Vega stages could also have been better. Adding the hyper fighting mode to the PCE version would also have been nice, since the the only thing required for it would be some extra code to speed up the fighting (the Chun Li fireball could just have used the Dhalsim fireball and been recolored blue, which is essentially what it is anyway). That being said, I do love the PCE SF2'CE just as much as CE on any other console. More in some ways, not as much in others.