So I as thinking just a few minutes ago about how TM Megatron was about the size of Optimus Prime's head when we see them together in "The Agenda". I didn't think much of it at the time since we were told about the downsizing of Transformers during the great upgrade. But then it hit me. We see guys like Tigatron hanging out with a real tiger and they're the same size. The rest of the BW bots were about the right size to compare to their alt modes ( birds and bugs excluded ). This would mean that Megatron should have been the size of a real T-rex, or at least close. He was certainly bigger than a tiger since he was bigger than Tigatron. Now a T-rex might be smaller than the cab of a tractor trailer, but not nearly as much smaller as Megatron was next to Prime. So which is it? Tiny dinosaur, or super huge truck?