IMO, Jim_0068 is 100% correct in his statement as is lagster. The golfer that bends more at the waist, ala the Hardy One Planer, will use the rotated shoulder turn and does not need nearly enough axis tilt to get the right shoulder on plane because the shoulders will naturally turn on a steeper plane at right angles to the spine.

Those that use the "standard" flat shoulder turn will need axis tilt to get the right shoulder travelling down the turned shoulder plane.

How much axis tilt is too much? That's easy. When the right shoulder starts dipping under the turned shoulder plane.

In this context, the death move for a "Hardy One Planer" (or anyone using rotated shoulder) turn is hip slide because that right shoulder will be immediately moved under plane.

Yoda briefly describes a "perversion of axis tilt" in one of the videos in the gallery where the right shoulder gets under the TSP.

The Rotated Shoulder Turn -- A Short Shot Procedure
 

Due to its Power limitations, Homer Kelley felt that the primary use of the Rotated Shoulder Turn would be for Putting and Chipping.

P.S. Love your avatar, vjcapron. Great alignments!

One of the reasons a lot of folks could benefit from the way Mike Austin/Dunaway approach the setup process - setting the left arm and club inline first (left flying wedge) and then kicking in the right knee slightly to lower the right shoulder and add the right hand grip.

An excellent way for hitters to setup to the ball (see Ted for the perfect example of this approach).

Very useful for encouraging a hitter's crossline hip motion, and tends to error towards closed shoulders rather than open. Can be 'overdone' however (too much tilt).