[whip]

By strength I mean the need for it to be able to close the face via PA3. The more PA3 angle you have, it's more difficult to close the face, hence more strength you need.

I think the shortening of the shoulder to ball radius is not a fault, but a compensation for having a left wrist that is uncoocked more than level at setup (sorry, his left wrist is not level at setup/impact fix), and then having a level and flat left wrist at impact. If he doesn't "dip", he will whiff the ball, not hit the ground.

to be perfectly clear no matter how many pros drop their head in the downswing, and no matter how many so-called golf swing experts think it is an asset and will tell you 'it's ok look the pros do it!' it is ALWAYS a fault!!! You will hit the ball better by keeping your head in the same place guaranteed, nuff said. Sorry brianid you are very mistaken, tiger has anything but an uncocked left wrist at setup in reality he has the complete opposite, his wrists In a cocked position because of his low hands setup has both Wrists in a cocked position and both arms straight another common fault seen on the PGA tour, common as the head drop neither of these things are helping there golf swings, rather they play well despite these faults because of RAW TALENT AND BALL- HITTING SKILL just as players in previous eras were sliding the knees all around trying to get "leg Drive" this wasn't helping them, they were playing well despite it.