JWR T.rex questions

1.According to the trailer, the dinosaurs on this new island are variants that are deemed too dangerous for the first Jurassic Park. However,the T.rex does not seem to have much of a difference with Rexy and other InGen rexes aside from probably more robust. What might be the reason that thisversion was deemed “Too dangerous for the original park” ?

2.Do you think this T.rex would follow the now repetitive “T.rex becoming punching bag for other Megatheropod or original villain” trope,like being murdered by Spinosaurus trio or the Mutant Dino?