Great Hammer is the 76th most-used weapon under the current filters (0.4% of 427,542 recorded fights), winning 46.8% overall - 11.9% of its wins come against better-geared opponents.
Best against Cursed Staff (69.7%), Mistpiercer (65.7%), Quarterstaff (61.5%). Struggles against Hellspawn Staff (14.3%), Frost Staff (20.5%), Bear Paws (25.4%).
Winrate by IP difference (50-IP buckets, dot size = sample size). A flat curve means the weapon carries regardless of gear; a steep one means it only wins when out-gearing.