They probably work fine. However, themarketing hype about "spiral wound channels" etc. is probably just that, hype. I much rather my broadhead/arrowconsume all it's energy getting straight through the off side of the animal than corkscrewing about.

A sharp broadhead, from a well tuned bow, delivered to the heart/lungs at sufficent velocity to penetrate said same, kills, every time. I doubt comic book graphics and marketing hype add anything beneficial to the formula.