ORIGINAL: da Rock
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ABSOLUTELY !!! Exactly the truth about this topic.

Aerobatic airplanes REQUIRE elevator deflection that can and will stall the wing. And that means you have to fly loops and such with less than that deflection. That's one of the primary reasons Dual Rates were invented.

It's not an error in design or a failure of the airplane that some of them tend to stall out of loops or stall off on one wing when landed too slowly as many inexperienced flyers instantly assume. It's the pilot using too much elevator and/or trying to steer with ailerons when the steering should be accomplished with the rudder.

Tune your elevator throws. Tune your dual rates. Tune the CG location. Then tune all three again. Then tune your flying skills.