Simplify the following text for a Grade 9 native English-speaking person.
Original: Spinosaurus was really the predatory animal . '' In the film , Spinosaurus was portrayed as larger and more powerful than Tyrannosaurus : in a scene depicting a battle between the two resurrected predators , Spinosaurus emerges victorious by snapping the tyrannosaur 's neck .
Simplified: Spinosaurus is much longer than Tyrannosaurus but there are not that many discoveries to prove that Spinosaurus was larger than Tyrannosaurus .