The question of whether acupuncture (in any of its hundred or thousands of forms) is more effective than control (a.k.a. "placebo effect") has been answered conclusively -- it is not. Acupuncture is indistinguishable from sham acupuncture in numerous, well controlled studies. It is the theatre, not the treatment that has any effect; and those effects are only measurable in the short-term against subjective outcomes. In other words, it's risky (infection, organ/vessel piercing), has no more benefit than just talking to someone or sitting quietly for a half hour, and does not improve health in any known objective measure.
The placebo effect "works" for a very narrow definition of "works", which is far less than what practitioners of these worthless treatments claim.