Well, I follow MMA fairly closely and rarely hear about either outside of sherdog. So, if a reasonably updated MMA fan rarely hears about them, I doubt 2-3 months of marketing will let them pull big numbers. Tony has potential to market, but even as good of a fighter he is, I doubt khabibs inability (unwillingness? Stoicism?) to market is basically shooting their PPV numbers in the foot.
You'd think a company like WME would do more marketing, considering that's what they are known for, and/or coaching fighters to better market their "brand" as a fighter.
People don't care how good a fighter is, the fighters and the UFC/WME have to convince people to care. Plenty of quality products get swept under the rug because they weren't marketed properly, or they figured it would sell itself.
So, so far, not good PPV #'s.