With naked warrior lv 30 full str + passive (5/5 str, 5/5 crit, 5/5 dex) :

Hammer Fatality Lv. 30 does 151.4 (dmg) + 235% * 151.4 (bonus dmg) = 507.19
Hammer Lethality Lv. 30 does 153.5 (dmg) +...