Comment on New Beginnings, pt. 1 by Daizua123

Just because it's bigger doesn't mean it's tougher.  Yes, Spinosaurus, Giganotosaurus, Mapusaurus, and Carcharodontosaurus are all a good deal bigger than T-rex, but they have weak jaws and knife-like teeth for slicing meat.  T-rex, on the other hand, has a more powerful bite that can crush bone and has teeth more like spikes.