TricksterPriest
Renegade Timelord
Let's assume that Snafu put all of them at their highest levels of power. For Bison, that's SFA3, with Psycho Drive. Krauser, Neo Geo Battle Coliseum. Ryu, SF3: 3rd Impact. And Terry, KOFXI.
Gameplay: Bad guys. I like Terry and Ryu, but Krauser not only has a deadly rave super, but he has 3 possible enders, one of which is his gigantic cyclone dm, which doesn't burn anymore stocks. Bison, at SFA3, was insanely strong. We all agree Shin Bison was incredibly strong and his psycho drive crusher was insane.
HOWEVER, if we use a less powerful Bison, from CVS2, for example, then it's harder to call. I still think Krauser can take Ryu gameplaywise. Bison vs. Terry is really hard to call. On Tiers, Bison is clearly stronger, but with good gaming, Terry could win. I think it would come down to whose super has priority.
Storywise, with Shin Bison, bad guys. With CVS2 Bison, Good guys, but very hard battle.