Stardust was able to singlehandly stalemate Michael Korvac.
Current Alex Nero can somehow (thanks to the Qwardians) tap into the same power as Kyle Rayner. Nero was defeated when Kyle fed too much of his own power into Nero, knocking him unconscious.
I'd say.... Stardust barely... He'd be able to manipulate the energies just long enough to pull a win. 6/10 for stardust.
God its been a long time since i've read GOTG.