Suggested by Sonic Riku has the powers of darkness at the ready but Vincent mastered those a long time ago. In his Chaos mode he can fire off brilliant blasts of energy and can also fly at high speeds. That is what will really give him the edge over Riku since Riku just doesn’t have the tools needed to counter those attacks. Riku would need to try and get in close to really land his best shots and against Vincent I don’t think that will really be an option. Vincent wins.