i would say he jas more raw power because i believe he has the ability to just wipe the multiverse,
Phillip33, as far as I know, LT with his full powers only can turn off suns (by accelerating the evolution of the Sun, causing the outbreak in nova to destroy others planets) and seal or isolate physical universes, but he can not destroy or wipe out them. This was demonstrated in Korvac arc.
its just the nature of his power that limits him against higher tier mystics.
That is the correct answer.