The argument I am making is that you can only say something was cheaper if it provided the same level of service or better for less money. In the case of the bus transition it provided worse service as indicated by utilization dropping. I am also making the argument that evaluating the value of transit shouldn't rest entirely on the cost of that service and ridership but on the value as a whole it brings to a city. I mentioned NYC because the evidence there (and in other cities that have implemented congestion pricing) is that as ridership goes up the economic, environment, and social health of a city also goes up. Point being, the bus transition had a very negative value impact. I will also add a final argument, as your ridership drops things like busses may appear less costly per ride simply because you are loosing volume and low volume routes are likely easier to service by bus so, again, cheaper but not an apples to apples comparison.