If it's for the PS2 then YAY! It has Heihachi. Instant win.
If it's for the other two systems... eh, it's still cool. However, the Gamecube version had Link for its exclusive. Pretty cool. Not as much as it is with Heihachi though. But it still has Yoshimitsu. WIN.
Soul Calibur 2 > Soul Calibur 3, also