Blade angle, tip type, number of blades, bevel type, degree of sharpness..........and that just the head.
Then theres FOC, overall weight, quality of flight.

I did buy a sharpener w a strop from my local big chain sportings goods store and it quickly made my Cutthroat broadheads shaving sharp.

Have met some trad guys that run BH's a bit on the dull side IMHO.
Yrs ago got some Magnus 2 blades shaving sharp w just a file.
Zwickeys I never could LOL

Lost the knack or steel change, hell I dunno, last Magnus I couldn't get em to pop.
Thought I was similarly afflicted this past yr, until I got a strop.

Scary sharp now, and took very little time. Do think the Cutthroats harder mofos (steel) compared to other brands I've had.