The big difference is in the cams. My old hunting bow is a 12 year old round wheel XI demon. (a cheapy bow even back then)
I can draw the Bowtech back like a normal (well almost normal) person now. Just took quite a bit of getting used to. Using a release is a new trick for me too.
I've never shot a crossbow. (well beside some sort of Nerf-like crossbow toy) I'd probably have bad form with one of those too. [:-]
41" axle to axle... itty bitty round wheels.