Considering """""""""""""""""""""""Clean Lesnar"""""""""""""""""""""" never becomes a fighter (or WWE wrestler for that matter) I'm gonna go with Hunt
Brock may have used/arguably used his entire mma career, nfl career, and WWE career and college. Would he have been anywhere near as large, fast or explosive? Brock early in his wrestling career (like early College) was like 220-230lbs and then ballooned up to 265lbs.
natural Lesnar still knows how to wrestle and Hunt barely hit him with anything while they were standing anyway
The last time anyone saw "Natty Lesnar" was when he exploded out of his moms cooter. I think a rational Hunt would probably just call Dr. Gosnell to take care of things at that point...