Here's the code:
To enter Championship Mode, wait for the Capcom logo, then press Down, R, Up, L, Y, B. If done correctly, title screen should be blue.
I don't really like the snes versions just because arcade versions are on the PS1/XBOX live. The snes and arcade if two different games. The strategy is slightly different because of the missing frames found on the snes. Sorry, I'm just a big street fighter fan and it makes a big difference for me.