Good one. I can't think of a clear way for either one to beat the other. Stick a gun to my head I'd lean towards classic Quasar due to his versatility. But realistically it could go either way.
ROT
rotiartStan Lee Stole my name
Wendell Vaughn siphons the worldmind from nova. The end.
DMI
dmillsCenturion Prime
Not smart. Without the world mind around to regulate the Nova force, Nova wouldn't have anything holding back his full power.