Rock Music snubbed at VMA's

I know that rock music hasn't been the top genre for quite some time, but it is still a popular genre. I mean to have the award just handed out on the red carpet is pretty insulting. Also I know that JT's performance and the footnote performance by N'sync was the highlight of the night, but they could have put Miley on the chopping block to have a performance by one of the best rock video nominees below

30 Seconds to Mars — "Up in the Air"
Fall Out Boy — "My Songs Know What You Did in the Dark (Light Em Up)"
Imagine Dragons — "Radioactive"
Mumford & Sons — "I Will Wait"
Vampire Weekend — "Diane Young"