This comes back to the famous Dodo Bird Verdict in psychology "everyone has won and all must have prizes."

It seems like most approaches to therapy work better than a no - treatment control, but none works better than any of the others...

There have been some attempts, like the transtheoretical model, to try to figure out specific instances where certain therapies are needed, but as far as I know none of these approaches have come out as clearly empirically correct.