Yes, 525 mg is on 75% efficacy and 700m is 81% so far, without adding the induction/maintenance phases. I believe the FDA asked to be above 70%. Seems to me that should be good enough, with the FDA having approved HIV drugs on less. Especially with the overlap and density test after the fact, showing the results would have been even better.
From the combo poster
24.62% (48/195) of patients treated with 525 mg PRO 140 experienced virologic failure.
18.55% (23/124) of patients treated with 700 mg PRO 140 experienced virologic failure.