Well I'm gonna have to look but I watched it on T.V. and read it in a book that t-rex was more robust just meaning that it was more heavily built or more muscular than Giga. It's that a little misleading though? Diplodocus is longer than Brachiosaurus but it's not larger or heavier than Brachiosaurus. Yeah I can't argue about it's skull length it does have a big head. Which is kinda funny considering T-Rex has the largest tooth size than any other carnivore.  mcelite