Two of my mates who saw the film, one of whom was extremely critical on it to the point where it annoyed me, ("RHW's face looked weird." ect.) said that they thought Sentinel Prime's betrayal was predictable. He also said it was unoriginal and had been done many times before in other movies. I strongly disagreed with them and so did my brother. We both thought that, if anything, it was unpredictable just because of the fact he was a Prime and Optimus' mentor. After seeing the trailer, I literally thought, "Shit. The only way they'll be able to win is if Sentinel Prime kicks major ass!". So I was genuinely shocked when he betrayed them, that scene left me with goosebumps in the theatre, especially since it was when the Autobots needed him most. But that's beside the point, what did you guys think? Predictable or unpredictable? What were your mates or families reaction to it?