All else being equal, yep shorties will be a bit harder to shoot consistently. But it really depends on form, and getting used to them. I find the short bows that offer a very long riser and VFT type technology shoot as well as most longer models for me. The short bows built on short riser however can give me fits personally.

My Patriot SC is 33.75" and is quite accurate and forgiving due to it' s very long riser.