I voted for the rockers breakup because this was such and iconic moment even through at the time, we didn't know how much of an iconic moment this would have been. The fact that we still talk about it today made it one of the greatest betrayal in WWE. But i have to give an honorable mention to a betrayal that while it really didn't go anywhere because of backstage drama but i still remember from my childhood and that's Jake The snake Roberts turning on The ultimate warrior. I know that in hindsight, this was a really stupid angle but i remember back when i was a kid, i was a huge jake the snake roberts and ultimate warrior fan and i thought who better to teach warrior how to beat that evil undertaker then jake the snake. Then when they finally did the third vignette and jake just left warrior to die and align himself with undertaker, i couldn't believe it and i hated jake for turning on warrior. Too bad that backstage drama pretty much killed that feud and warrior was let go soon after they aired those segment because it would have been such a good feud to watch.