carcharodontosaurus is just so much more robust and solidly built than the spinosaurus. the spinosaurus's jaws and neck are not suited to wrestle other large dinosaurs. its sail would put it at a huge disadvantage. not only would the sail present itself as a large vulnerable target to attack, it would also interfere with movement. should the spinosaurus fall, it's sail would be crushed and it's pretty much out of the fight
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carcharodontosaurus is just so much more robust and solidly built than the spinosaurus. the spinosaurus's jaws and neck are not suited to wrestle other large dinosaurs. its sail would put it at a huge disadvantage. not only would the sail present itself as a large vulnerable target to attack, it would also interfere with movement. should the spinosaurus fall, it's sail would be crushed and it's pretty much out of the fight