>>150200839
>spoiler
Yeah, there's no situation where it'd ever make any sense for good ol' OP to be gundam-sized, but I can't say I don't thank the artistic liberty, that episode has some top-notch choreography once they land on Earth.
That being said, I don't think size accuracy would help Amuro a whole lot, Optimus at his peak is very much capable of fighting bigger robots than him on his own.