Would seem that way until you take into account the high energy cost of dual wielding, and the crit bonus on the axe.
For example; at grand mastery the daggers will cost 995 energy and do 74-83 (30 str +9dmg and GM +12dmg) subtract average pv of 25 for high leveled monsters then multiply by 2 for the 2 weapons (98-116) dmg per 995 energy.
Now the cow axe; 30 str and grand mastery it's 595 energy. Will do 30 from GM, 13 from str (value is 1.5 times bonus from str.) so 63-159 minus 25 avg pv, equals 38-134 with high crit chance and 595 energy.