It doesn't matter how Multiversal they are, Protege is able to copy the powerlevel of any being, stacking it on top of his own, so everything the anime bring to the table, the comic will have shortly. And LT has enough feats to suggest he can solo. Crafting two megaverses, that consist of multiple multiverses, each made of a infinite amount of universes, is one. Replacing the core element of the Marvel Omniverse, because he wanted to is another.
TTGL's whole thing is Spiral energy >>>>> you.
On feats, I'll admit they're a bit short, but they went from primitive tribes to a thriving civilization in, what, 7 years?
TTGL is what DBZ fans think that is, it doesn't go off logic. Just "on demand" plot devices in a nutshell. In just 7 years, they're from caveman to universal+ level anti spiral spankers.. Give them 30 or however many since series end, and imagine what that "spiral energy" can accomplish. 🙂
And if that isn't convincing (And it probably isn't!), well, there's always Demonbane..