personally, and maybe this is just me, but i don't trust the sharpness of any brandy new just-outta-the-package broadhead, no matter what the labeling sez about its readiness for hunting.
i typically get a dozen heads at a time, and one or two heads might be used strictly for testing/practice and will never get sharpened, the rest all go through the "scary sharp" ritual with a kme
knife sharpener.
what i would like to see with ALL broadheads, is that the bevels are well cut, and right to the edge and not left blunt - that just means extra file work on my part to get the edges trued up before starting the actual sharpening process. i just went through this with a 12 pack of tusker concorde single left bevels and it was more file work than i cared to do so i used a bench grinder to true up the bevels before putting each head on the kme knife sharpener.
so my vote would be to just grind in the edge bevels completely (don't leave any blunted areas!) and i'll take care of the real sharpening.
ymmv.
btw - no matter how sharp a broadhead or knife is after leaving the factory, a good sharpening system will show you how really sharp that blade can be.
heck, blades just hanging around and not protected with a goodly oil/wax coating get dull just by oxidation!