Arguing that BART and Caltrain should get more money by virtue of the fact that they are rail systems may be arguing against cost-effectiveness, but it's still a valid argument.  Cost-effectiveness is not the be-all, end-all.  BART and AC Transit serve different functions, and their funding levels reflect that.  No bus service could take the place of BART, so it seems foolish to hold them up to the same funding standards.  That's all I meant.