Eh, the Injustice Superman stats were pretty watered down in the game. Roughly JLU levels, IIRC. Anime Kazuma should be able to keep up, and can dimension dump.
That said, it's still an uphill battle with all the esoteric abilities Strong has. Anyone remember how tough Celestine from the AMG movie was?
A lot of factors to consider, but I'd say Strong has the advantage. She's been practically everyone.