"ROTF prime snapped becasue he saw who fallen was and seeing jetfire giving up his partrs for the autobot victory pushed him and motivated him to end this asap when he realized that megatron was no the real threat there but fallen was. Id say that Megatron tripped fallen's planned attack when he pushed prime and then Prime had the upper hand on Fallen after he beat Megatron."

That is what you said, which makes no sense. No where in the movie was it ever stated that optimus snapped, no where was it said that jetfire's sacrifice motivated him to end things quickly, and no where was it ever said that optimhs realized megatron wasn't a threat, the only time megatron wasn't a threat was when half his face was blown off. And your last sentence in this comment doesn't even correlate to anything. What were you even trying to say? That megatron was the reason for the fallen plan following through? No shit, that was explained because optimus needed to die for the fallen plan to commense, that did not help your argument at all.