Method:
For sharpness, i forged two axes. One i sharpened and the other I did not. made sure both had max durability.
For the sharpness test, I ran around and hit 50 zombies that naturally spawned, for a "real world" test. I put each damage number i got through the combat text mod into a txt document. One shots just display the hp of the zombie so that is marked.
Every 100 zombies i checked the sharpness of the axe, and sharpened it if i could, i sharpened the axe 6 times and repaired the handle once (this is testing head durability, as thats the important part)
for the blunt test i did the same as the sharp test, but only repaired the handle as needed, and ignored the sharpness.
(since i forged an axe and didnt sharpen it, it starts completely blunt, worst case scenario)
heres the results for now (tests were done with lvl 10 axe, maint, and strength. I will do a 0 skill test later for a better avg dps wise)
Maintence:
Blunt axe: 518 hit for head to break
Sharp axe 773 hit for head to break
Overall damage averages(overkill excluded)
Sharp: 174 damage per hit
Blunt: 180 damage per hit