They all are not "pretty much the same." All the full scale aerobatic airplanes are designed with enough elevator authority to easily stall the wing. That doesn't result in them all flying "pretty much the same" or even having the same sensitivity to "too much elevator". Sensitivity to the elevator throw also includes how each model has been setup for CG and elevator throw, and how large the tail is and how far back it is from the wing.

You can luck out and place your CG well, and rig the elevator sensibly to begin with and your model will fly better than some earlier aerobatic type. But all the aerobatic types will be able to stall the wing easier than non-competition designs. Will they all do it the same? Nope. Nor will they all fly the same.

A Chipmunk is a perfect example. It's an earlier aerobatic design. It's elevator will stall the wing easier than a Cessna 182's elevator will stall it's wing. Get the CG back and put big movement on the elevator with full TX stick movement and you'll have a nasty flying model. But do some sensible trimming and it'll be easier to fly and lose the nasty.