ME thinks all you see when you see Luo train, is training. When applying im pretty damn sure none of us would say "oh, he rose his back shoulder a bit and he rocked back and forth before the kou". All of us would just see the BOOM, man down. Like with any other extra skilled guy.
Just training. The step, the twisting, the spirals, spinal wave, compression/expansion, all the good stuff. I don't see anything weird with it.
Don't know about the other guy.