You can't compare a firearm to airsoft, the mechanics are totally different. Musket balls did not spin backwards as they traveled down the smooth bore.
I would like to see some long range, indoor, head to head results before I signed off.
Hersey of airsoft players counts for nothing in my book, because there is a lot of "pride of purchase" in this or that. People have claimed that the 6.01 barrels increase accuracy, where this states they would loose it.