Durability is the one thing I will give you that he impresses with. As said, pretty much every member of the Legion shows to hit him at once, and...it KOs him for a minute
Otherwise, no, he isn't half as impressive as standard Superboy Prime. And just to drive the point home, while TTP is busy being unimpressive during the final battle, Superboy Prime is elsewhere whupping *everyone's* ass, like he often does. And then it's finally topped off by Superboy confronting TTP directly, TTP trying futilely to negotiate with him, and then Prime punching him into a time paradox. Basically, that whole book drove home the point that TTP was *not* on Superboy Prime's level.
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We are thought, and reality, and concept, and the unimaginable