Let’s be generous and say 50/50.
But look at it this way: one was a vehicle with no driver present in the seat, and the other was a vehicle in which a driving agent is never not present. A human driver in that situation should not spend longer than 5 seconds figuring out and implementing a way to safely let the fire truck pass. The Cruise car took longer.
If a human were present with two working eyes and ears and armed with good judgement, they may never have been blocking the way in the first place because a fire truck in SF is blaring it’s horns while it charges to the situation it was called in to answer so it is entirely possible that seeing the garbage truck parked up ahead, they would have opted to not even continue driving because that looks like an obvious choke point for an emergency vehicle trying to pass. Alas, I cannot reasonably expect that kind of situational awareness and judgement from an average human driver so maybe that’s also too big an ask from Cruise.
Also note this from the article:
> The fire truck only passed the blockage when the garbage truck driver ran from their work to move their vehicle.
So in the end, the Cruise vehicle was not the one which allowed the fire engine to pass but a hurried garbageman moving his truck after getting back in the driver’s seat. 50/50 may actually be too generous to Cruise here.