The subpar ratings for UFC on FOX 3 and 4 were the best thing to happen to this FOX deal. The UFC realized they couldn't put a mediocre card together and draw the kind of ratings that FOX was looking for (both of those cards featured excellent fights, BTW, but with no title fights or huge names in the co main or 3rd bout instead of main event...shitty ratings). Last 2 cards have had title fights headlining them, and Bendo-Melendez sets up a 3rd one. Throw in big names like Shogun, BJ, Rampage, Mir, perhaps Vitor against up and coming studs like Gustafsson, Rory, Glover, Cormier and perhaps Rockhold and these cards are incredible.
They've really mastered how to put them together:
155 pound and under title fight
Legends vs. up and comers
Exciting fight(s) on paper to kick off the card
I should add they usually have favorable matchups for the young studs in these matchups vs. legends (Vitor vs. Rockhold would be the exception, so far), which is a great way to build stars. A win over a legend on FOX with an audience of about 4 million people watching is how you get the average fan to know how good these kids are the way the die hard already does.