Who would win in a fight between Allosaurus and Acrocanthosaurus?

Here is my knowledge. Acrocanthosaurus was 40 feet long and wieghed 5 tons, while Allosaurus is 36 feet long and tiped the scales at 7,500 pounds. Acrocanthosaurus was larger and coul take more damage, while Allosaurus had speed and eyesight on its side. Who would win? Probably Acrocanthosaurus.