We're all suckers for brand names and customers are even more so. They want a XXXX barrel (note there have been at least 6 barrel makers with 4 letters in their last name; Hoyt, Getz, GRRW, Paris, Rice, Rayl) and a XXXXXXXX lock, period.
I can't compare short barrel accuracy to long barrel accuracy because I just can't seem to shoot a 32 or 36" barrel nearly as well as a longer one. On the other hand, maybe some of my shorter barrels were lemons. In long barrels, I've never had one that would not shoot well, regardless of brand. For me, shooting really well is under 3" from bench at 100 yards with open sights. I think it is the distance between sights that enables me to shoot a long barrel better.