Why is that?......According to 5 Shot's tests the 100gr Muzzy 3 blade scored a 25 w/ a blade sharpness of B.
The R.Mt. Turbo scored a 28 w/ a blade sharpness of A+, and according to him it shot through everything like wet toilet paper with no damage and with field point accuracy.
Muzzy is a good time tested broadhead, but what are you basing that opinion on? 1/16" of cutting diameter?
IMO the new breed of short, inherently accurate heads like the Rocky Mt. Turbo, NAP Nitron, Slick Tricks, Sonicsetc could quite quickly replace oldstandbys as Muzzy, Thunderhead etc as the year in year out favorites.