prime always had some kind of respect for megatron ok they arent freands or anything but when there was a situation where its needed prime always try to covince megatron to work with him and megatron for most part agrees even if it is for his own reasons
fast forward to season 3 the movie and rebirth with galvatron theres none ( except for return but rodimus was half hearted with it )
there was none of that does this do you think show the diffrence between galvatron and megatron at all