COT benefits the best drivers by leveling the playing field with the equipment. As a Junior fan and sworn enemy of HMS, this is very painful to say, but Gordon, Johnson, & Kyle Busch are three of the best drivers on the circuit. Your argument that it's helping the big Hendrick team is lacking. Roush's teams haven't been so hot in the COT, and they're even bigger.
Montoya dumped him, plain and simple. They were side-by-side for a couple laps, rubbed a couple times, & Montoya got pissed that Raines got by him. He dive-bombed it in there like he did when he wrecked Pruett, only this one was more obvious.