This. Not every wrester need mic skills or need to be good or even decent on the mic.
The undertaker, ultimate warrior, Goldberg, (crow) sting, lesnar, rvd, and jeff hardy are
examples that you don't need good mic skills or mic skills period to be a top star.
These guys got over by character, physical presence, or wrestling ability. You only need one good to great niche to be a top star. There's different ways to be a top star.
Not everyone needs to have the complete package. Cesaro niche is more of the jeff hardy/ rvd type in the sense that he could get over based on what he does in the ring.