They are no better forms of therapy.
It depends on the client. Some like DBT others prefer different forms of therapy.
I think the T is more important than the school they represent. They should be able to look behind the rigid rules and just be able to be there for their client.
Personally I like the "talk therapy" the best. Don't have experience with DBT (is it for ppl with BPD?) but absolutely hated CBT, which as I understand is widely used in DBT.

Hope someone who knows more about forms of therapy will answer you soon.