That's stupid.
Uriah Hall just lost to the next Anderson Silva last weekend. Matter of fact, he is 1-4 in his last 5... not exactly stellar or deserving of 100k per fight purse....
Mike Perry is 1-2 in his last 3 (was 2 losses before last weekend). Also not someone who accomplished anything yet.
Chiesa just lost his second straight. He is great against lower tier, but then loses to journeymen or better.
That's while Borrachinha just beat your "next Anderson" and ended the great career of Hendricks, an ex-champion, on MSG.
So of all the names you threw, Borrachinha is the ONLY ONE who is actually climbing to the top echelon of MMA.
He is also unbeaten at 12-0.
Let us not forget that some unbeaten guys at 12-0 would be getting title shots about now.
And it is not like UFC is taking any chances with him! He has been thoroughly tested by USADA and they are giving him guys progressively harder.
IMHO it is well deserving of his pay. Matter of fact, he should be paid more, since his next opponent should be guys ranked in the top 10.