I don't know much about what Westside lifters do out of their gear. I really don't know much about what they do at all, since modern powerlifting is not really my interest. But I have found 2 videos that I think will illustrate the difference between the way we teach the squat and the way Westside lifters approach it. The first is Scott Cartwright squatting 1025 in a USPF meet, the second Andrey Malanichev squatting 1034 in an IPF-sanctioned meet. Note the difference in the mechanics of the movement, the bar speed through the lift, and the use of the hips.
We teach the squat mechanics Malanichev uses. I believe the gear to be approximately equivalent. If I am incorrect in this comparison, please advise.