Well I m gon na 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