Have you ever seen Starscream's “true form” before? I was thinking about it along with some of your posts about Megatron's power loss fetish, and it gave me an idea.
In my mind that body is around a head taller than Megatron(s) and just a bit stronger than him, not whole lot but enough.
So Starscream finally has the perfect means to put Megatron under his heel, however I don't think that advantage would last long. As he is going to quickly become too exhausted to move from all the fighting and interfacing Megatron will be initiating after essentially being blue balled for vorns.
While I don't really like the true form plot line, the concept of Starscream powering up to his peak and immediately dropping everything to go overpower Megatron, only to get the life drained out of him from all of Megatrons holes is very funny and I love it