In theory. Problem is to cost justify a train it has to service a lot of people. That means more stops, and soon your train advantage is quite limited. Plus you have to look at the whole commute experience. How long does it take to get from their house to the train stop that serviced them? How long does it take to get from the station they get off of yo their destination? Sf lrv is a lot faster than the surface buses, but they suffer from the plane unloading and loading problem to a lesser extent during rush hour. As a result lrv traffic actually gets congested through under Market Street during rush hour. The other issue is if your work requires you to have a car during the day, ie professional sales people. You could take a train to work but during the day most of your appointments are only accessible via surface bus, which basically crawls around the city.