Hang on, what are the limits of Thanos with the glove/gauntlet? I thought that he remade creation and the only reason he wasn't "God" was that Warlock talked him out of it. I've got the comic somewhere, will have to go check it out, but I'm sure he was (as per your signature) pimp slapping everyone including Living Tribunal all around the place. Doesn't that suggest that TOAA may not have been powerful enough to intervene?
Umm...The Tribunal nullified the Gauntlet's power. I think you hjave it confused with The Heart of the Universe, which was stated to use the power of TOAA in the first place.
Heck, it was TOAA who had utter control over everything. He was the one who manipulated Thanos to do everything he did in that comic.
However, Thanos besting the Tribunal was clssic Jim Starlin: Only his chars can win.