2) As I see it, the heart of this argument is really about the carry-over of LB and HB squats to other things, specifically OL. Here are a few general observations about carry-over.
When I was a good LB squatter, that strength did not carry over well to HB or front squats, as evidenced by some of the numbers above. When later in my lifting career, I became a decent HB squatter, it directly and immedietly carried over to being able to do very respectable numbers in the LB squat. My front squat of 550lbX5reps and HB back squat of 606lbsX10 reps, both done without a belt, these sets done about a month apart, allowed me to do several very, very respectable LB squats, and LB box squats with no practice or training on either the LB squat or the LB box squat. My feeling was that strength gained from HB squatting was just more "transferable" to other things than strength gained from LB squatting. Through many conversations with others, and a fair bit of experience coaching ex-powerlifters in the Olympic lifts, I have found that this seems to be quite universal. HB, Olympic style squatting will make you strong at the LB squat, LB squatting with a more bent over stance and less depth will NOT carry over well to the HB, Olympic style squat. I think the carry over from one to another bears considering, because what what we are really talking about here is the carry over from one type of squat or another to a completely different exercise.
Fred Hatfield, AKA "Dr. Squat" who is a respected authority on strength training, has written a couple of very good books on the subject, and who competed at a fairly high level in both gymnastics and OL before achieving a 1008lb squat at 44 years of age and I believe around 255lbs, has argued extensively that not only should the HB squat be used EXCLUSIVELY for the training of athletes, but its qualities of carry over are such that even POWERLIFTERS who are actually competing with a low bar, bent over, only to parallel and sometimes wide stance squat, should in fact do HB, Olympic style squats for much of the off season. In a rough quote of his words, HB squats build strength, LB squats demonstrate it.