It's a terrible fight for the UFC to make. If Gane wins, they'll derail Pavlovich with no benefit gained, as Gane will still be known as the guy with zero defence against wrestlers. Winning the fight does very little to change the perception of Gane and Gane winning it destroys the credibility of the division.
Pavlovich on the other hand has already built himself up as the #1 challenger with five consecutive 1st round KOs and proved himself against a wrestler too. The fight is simply large risk, little benefit in every way.