not sure what you mean by the bolded.
dog, 95% of punchline rappers, are proficient at other styles of lyricism. banks aint doing nothing special. hes always been an excellent lyricist but i never put him in the top-tier, not even for his era.
prime DMX would spank banks in a battle, whether on-wax or in a cypher.
as far as the better lyricist debate goes, it could go either way. i'd say that banks is more consistent, but when X wants to get into that bag, he easily drops a better verse. it depends on how you judge it. i have no problem with someone saying that banks is the better lyricist.
Consistency, like you said Banks is more consistent. I would say the same thing about some of X's contemporaries that he outshined on guest spots.
As for styles, that's true but I legit think Banks painted himself in a corner and gradually found himself, for real for real, not just to stave off criticism and it shows.