Great Cursed Staff is the 126th most-used weapon under the current filters (0.1% of 975,342 recorded fights), winning 33.0% overall - 21.8% of its wins come against better-geared opponents.
Best against Battleaxe (37.5%), Dual Swords (30.3%), Frost Staff (27.3%). Struggles against Bear Paws (8.0%), Longbow (22.9%), Frost Staff (27.3%).
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.