I don't think so, because a lot of step workouts by others, such as Christi Taylor, have their own style of moves and technique, laying steps down, etc. Cathe for me is the most advanced, yet I find Cathe's stepping technique far easier to pick up than say Christi taylors.
Having said that, I seem to always do cathe on a daily basis, and rarely use anyone elses w/outs.