As for the clubface position at the Top or End of the backstroke, well I don't care.
If the clubface has the correct alignment to the ball and the left wrist has the correct alignment to the clubface (3-F-5) then the clubface will be what it is.
You can have the correct alignments for the clubface and left wrist, etc. and yet vary the plane angle for the same club and discover a different clubface position at the top/end. So if some is shifting, it is a good chance that the clubface may not be position as one might think it should.
Take the golfer who say has a stronger grip, but aligns correctly at Impact Fix, the clubface position at the top is not going to be the same as for someone who has a neutral grip.
I subscribe that what defines a good position at the top would be for the alignments of the hands, wrists and right arm to be accurate.
I think you are looking at more position golf than alignment golf based on your descriptions, but I could be reading you wrong.
No I don't believe that is correct that Jeff is intending to show that the hands are in the same position. To accomplish that with the short club, then the left wrist would be arched I believe.
It was to showing how he lets the club define the ball position.
Trace the Club Shaft of both clubs to the left shoulder, that is the alignment I was referring too.