Okay, okay, having learned my lesson from my ill-fated "Grimlock and the Dinobots versus Mystique's Brotherhood" bout, I have proposed a new bout for your Viners to decide the victor. I'm not naming any sort of conditions: just pick a winner, and state why.
For this bout, things are about to get both COSMIC and BIG--literally!
In this corner, the main antagonist of the legendary Crisis on Infinite Earths, the 'guardian' of the Sinestro Corps, the antimatter alpha-menace:
And in this corner, the lord of light, the god-like creator of the Transformers, and the planet Cybertron itself:
Make your claims, Viners, WHO will win this battle on a galactic scale unlike any other?