Its jaws, its arms, and its tail could all be considered defenses. And its arms were powerful. Almost as long as Deinocheirus', and with the biggest claws of any carnivore.

Did you not see me say arm range? Plus, the arms weren't stiff or powerful, plus, saying its jaws is a defence is the most vague argument ever since, its bite was weak, only strong enough to take out fish or small dinosaurs, plus, it can't even use its tail as a weapon since it's stuck on the floor which would really cause drag, so how would it use its tail as a weapon? Tail on the floor + drag = a very slow speed.

What evidence do you have for arm range? Also, its bite was not weak at all, at 11,936 N. And if you want to talk about drag caused by Spinosaurus' tail, go back to the 1930s.

^ lmao what? Hate to burst your bubble but, recent Spinosaurus skeletals show tail drag, so how about not tell me about going back to the 1930s.

Shit!

I misclicked!

The most recent one doesn't have a dragging tail.

^ it was still pretty close to the ground meaning that its speed would be low, plus little legs.

Speed doesn't matter as much as agility, and Spinosaurus would have that advantage, believe it or not. Due to its more flexible tail, it would be able to bend its tail towards its body and reduce air resistance when turning. Acrocanthosaurus, with its stiff tail, would not turn as well.

Pee is stored in the balls

Spino would get demolished by Acrocanthosaurus, and that’s not even me speaking as an Acrocanthosaurus fan. I’m saying that in general.