I think their BRT stats are only for HealthLine. According to 2018 NTD there were 13 vehicles operated in maximum service for their BRT mode, about the numbers they need to maintain schedule on HealthLine during peak hours.
Even HealthLine are rarely on-time these days. I live reasonably close to Euclid Ave and work in Tower City so HL is near perfect in terms of alignment. But I have been walking 35-40 min to and from work these days because it takes almost as long, and sometimes longer, to use HL.