User blog comment:DYBAD/Character Sheet/@comment-25417020-20141116202051/@comment-4867780-20141119210658

As I already said, many characters were officially stated as Omnipotent over and over, yet turned out to be Nigh Omnipotent with unexplored limits until they came into light.

There wasn't never any ambiguity regarding TOAA's supposed Omnipotence, because he had the wisdom of remaining hidden in the shadows for 99.9999% of Marvel's history.

Him being the strongest being of Marvel seems relatively probable out of his sheer act of creation. Him being truly Omnipotent is another matter entirely, and devoid of virtually any probability-increasing materials (talk is just that), making it wholly uncertain.