I think the problem is this prime walks the fine line of hero and judge jury and executioner. He is a bit to ruthless as he is pretty much exacting the same justice against his enemies as the decepticons do and also his choice to snuff sentinel when he is begging for his life is just not like Prime at all. There would of atleast been hesitation or something not just a cold blooded killer. Essentially Prime has false compassion as it just dissappears when its not a human poorly written. Example "poor jazz" and moving on lol Good Prime not even close to the best though.