the MLB pattern has "live and independent" hands as candrea and Slaught describe it which is very different from the non-MLB/"PCR"/"gate"swing that Mark is describing.
In the "live and independent hands" swing Tom talks about, the hands are very active and turn the bat along with the forearms to begin creating whip behind the batter out of the load position. In the swing Mark promotes, the hands are basically dead and only serve to grip the bat and support the bat, while relying on hard, brute force rotation of the hips/core/shoulders as a unit. In Mark's swing the bat is pulled into rotation/into the swing path and whip occurs at contact. Big difference between the ML swing and Mark's swing, IMHO.
Mike