You hit the nail on the head Sherbro - he is HIGHLY underrated. The thing is if you don't fight in the UFC that people don't give you enough respect, but you can only fight the opponents available. So when you are a bigger fish in a small pond people assume that you are just feeding on guppies, when there are also other big fish around (even if the pond is small).
I think he does have what it takes to beat Pitbull, but it's a 50/50 fight; Pitbull will have advantages in ability to counter but will be giving up significant length so will have to be slipping lots of jabs to work inside the distance. That's a fight where whoever is controlling the action will win, be it through feints, blitzes, or distance strikes.
Love Patricio and he is as legit as they come but he is pretty "seasoned" in fight years. At some point the trade-off of fight experience for declining athleticism starts to tilt towards athleticism heavily. Patricio is still very fast but probably not as fast as in his prime and his overall out-put has probably dropped as well (though he is far, far better at reading the fight and picking his exchanges and moments).
It's a legit past/present vs. the future match-up, which we rarely see. Too bad we'll have to wait 2 months for Pitbull to fight Sanchez and then another 2-3 months to make this fight, so we likely don't see it until Summer of 2021.