php vs cold fusion

I have a running argument with a co-worker as to which is a more advanced development tool, PHP or Cold Fusion. My argument in a nutshell is that it's a real language with features such as OOP and a relatively rich syntax and collection of functions. He just says anything you can do in PHP you can do in Cold Fusion. That may be true to a point, but having worked with CF just a bit I feel limited by it's tag-based syntax. It would be nice to have some more ammunition. Any ideas?