[Oh, he'll have to assume some bias; that's perfectly all right. Besides, even if Ironhide had personally talked to the Megatron from his universe about his intentions, unless he was on his side, bias would have to be assumed.]

Mmm... Sounds somewhat close. Of course, Megatron led no armies on my Cybertron... but we're quite sure one of his plans involved turning the planet mobile again. Probably using it as roaming, planet-sized war fortress.

Who knows the reason, or how he even knew of the possibility of Cybertron possessing planetary engines... That, I think, few know.