I just did some research, in the last two years from this date these things have happened:
Every belt has had more title fights than the middleweight title except for the 125 pound championship (which has been around for less than a year but still has as many fights as MW) and the Womens title (which was just created).
Bones Jones has had 5 championship fights.
Mighty Mouse lost a title fight, dropped a weight class, fought in a tournament which included a rematch, won the title, and defended it.
GSP has had as many title fights (2) as Anderson. GSP was seriously injured and sat out for like an year, but still has had as many title fights as Anderson!!!
There is more, but those are the most dramatic examples. Numbers do not lie, and I rest my case.