Don't know where you get that from. I can think of at least 4 or 5 commentators that are more relevant,guys that have actually fought in the sport.

I guess but they are generally not anchor commentators though.

As far as the anchormen go in boxing and MMA , Lampley, Kellerman, Merchant, Sheridan, Mike Greenberg, Renallo etc he is the most intimately aware of the sport in which he commentates.

You can't watch a UFC event and deny the guy knows what he's talking about, he can usually predict what's going to happen next, especially when they get on the ground. He makes the groundgame very understandable for the average fan imo, he's basically like Teddy Atlas without the analogies and reconstructed face.