Stryfe from the "Blood Brothers" Storyline when he had the Goblin Queens energy and Nate Greys as well.
VS
Superboy Prime when he got back from the future in Infinite Crisis #6
Which "suped" up evil doppelganger wins?
GF
grey foxKMC Magik Founder
SBP, unless we see Stryfe retconing stuff then theirs ZERO chance of him even being able to scratch The brat of steel.
SOL
SoleranFast As Time
SPEEDBLITZ SBP 4 the winsorz
BAS
Basti0nRestricted
I dont think it would be THAT easy, this is Stryfe with the power of X-MAN and the Goblin Queen as well as his own. Superboy Prime might win but I dont think it would be a slam dunk.