If you compare the (this was posted early in the thread) the respective profiles of the descent comparing 6 July and 5 July, you'll see these guys actually were far below the usual G/S miles out from KSFO.
Well, no. If you examine the lat/long/alt/airspeed/vs, data from Flight Aware you'll find that it shows that at about 3 miles from the threshold, they were at 1400 ft, 169 kt descending at 1380 ft/min. Now there's some question on how that data was derived, but regardless it's the same data used to construct the profices that were posted.