Boxing was at its peak w Tyson and the HW being relevant and exciting. UFC did more 1M PPV buys with Lesner. Lesner is no where near the fighter JDS or Cain is but realistically he was and is much more exciting than Cain. Cain isn't like GSP who is willing to stay on his feet with and dominate the best WW boxers. He's a true grinder and it's simply boring to most. I don't think anyone is going to beat him anytime soon but I bet Jones, Anderson, GSP continue to lap his PPV demand.