Starting with 151? Look at the injury rate this year.
I'm not talking about injuries, unfortunately it's much bigger then that.
UFC 151 was the first UFC event cancelled
2 fights got cancelled on THE DAY of the event
A fighter (Geronimo Dos Santos) tested for Hep B a week before the event, which means he may never fight in the UFC
Also what was up with Jorgen Kruth RETIRING from MMA even before his UFC debut??
You cant seriously compare all those extreme cases to some injuries incurred about a month prior to an event
Following: Cain , JDS, Werdum, Shogun, Machida, Weidman, Pettis, Aldo, Melendez