From a pure PVE perspective, this hammer is actually very good. Compared to the Great Mace (both Heavy +10 with 66 Strength ,40 Endurance and +2 Ring of Favor, two handed), Great Mace can swing 4 times and Great Wooden Hammer can swing 5 times. GM does 1824 in 4 swings, GWH does 1700 in 5, tested of Harald knights. Both stunlock the same. And the last point, one weights 18 units, the other 6. So yeah, pretty good weapon I would say, as long as you can stunlock the enemy.