Not really sure what your saying here. The gist being that Van Dorn was a lackluster commander? With lackluster underling's?
Well yeah! He proved is unfitness for command of an Army at Pea Ridge. It was only Jeff's sponsership that kept him in command of the Army of the West thru the Corinth-Iuka campaign. After that he was relagated to a minor Cavalry Command...too late.
But Van Dorn was pretty much at fault for his own failures at Corinth when he for the most part got a case of the slows and ignored Braggs orders and allowed him self to be split from Price. As well as dispatching Breckenridge into La where that command was chewed on.
Van Dorn is not the leading example of what a western
CS general was. There were plenty of good ones, Forrest, Cleburne, Breckenridge, Cheatam, PGT.