Request for information - in the NTSB briefing for the 10th July, they say at fifteen minutes that approaches to 28L and 28R are alternated so two don't happen in parallel.
I've flown into SFO many times and have most definitely been in a parallel landing; indeed, I remember asking about separation rules for this on Pprune a few years back, and someone has described a similar situation on this thread. It's unnerving enough as pax; I wouldn't like to be up front with TCAS complaining.
How often does this happen, and does the NTSB know? I know this wasn't the case here, but boy, thank goodness for that.