I believe buses are almost universally better than any kind of city light rail. Please no more light rail in cities, more buses.
I used to work with a public transit evangelist tragic (in his spare time) and he hated buses and bus-ways. I could never understand it. I think there's an element of permanance to light/heavy rail where the physical infrastructure is there (ergo it can "never" be taken away, ha ha) while a bus-way can be turned into a road. I think there's some legit reasons (capacity) that light rail is better than buses in many ci…
In general, for developed countries with high labor costs busways are a rotten deal since buses have such low per-driver capacity. And the most successful busways can't scale and end up getting replaced by light rail anyways. (Ottawa, Seattle, LA's Orange Line)