Every advocate always has their pet theory as to why their method works better than others. They also have "evidence" which is either completely anecdotal or does not control for even the most obvious of factors (such as rate of queue arrival or average speed in the constrained resource).

Simply put, they are all wrong. A bottleneck is a bottleneck and there is no fairy dust magic queueing technique that works better than another. At best, some techniques might have a behavioral advantage...but I stress again, they are all inconsequential. We are talking tens of seconds of time savings at best.