Thanks for the backup, Tamara.
No, not a sample of one. Many examples and one scientific test demonstrating that barrel length and mechanical accuracy have little to do with each other.
Trigger, sight radius, grip etc. help practical accuracy. Lock up, rifling, chamber, etc. affect mechanical accuracy. Both make up the handheld accuracy you experience.
Olympic match pistols do not have super long barrels. A scoped 10 inch Ruger MK II will show no greater accuracy than the same pistol with a 5 inch barrel. Marine Snipers don't use 28 inch barrels on their bolt guns. The Glock 26 has been found by many testers to be the most mechanically accurate Glock made, it has about 2 inches of rifling. The military is considering going from the M-16 with 20 inch barrel to the M4 with 14 inch barrel as standard issue since most shooters can shoot the same with both. For a given rifle weight, a short thich barrel will produce better accuracy than a long thin one.
The blackhawk test was interesting because it was done carefully and incrementally with the same pistol. Group to group showed only the minorest variations and no trends as the barrel shrank.
I'm sorry if this conflicts with anyone's "common knowledge", but it's demonstratable and repeatable. The accuracy only advantage of the 35 over an upgraded 22 or 23 is site radius.