It's a close one, but people won't give Whittaker much credit. Which is fair, his style seems so unlikely to work, but somehow he keeps overachieving and finding a way.
Jacare is the better fighter, that much is clear. His striking is more than competent, his takedowns are some of the best in the division (not better than my boy YRP though) and obviously once he's on top of you, it's game over. Hard not to expect him to get Whittaker down at some point and eat him alive, but fuck man, I would not be surprised in the slightest if Whittaker stuffed a couple TD's, found an angle in the scramble, and knocked Jacare's head into the third row.
At this point, Jacare deserves a title shot though. Whittaker is good enough for top level fighters, maybe he get Weidman or Rockhold while Jacare and fucking Henderson get their title shots lol.