Fallen Staff is the 108th most-used weapon under the current filters (0.2% of 969,554 recorded fights), winning 8.2% overall - 11.9% of its wins come against better-geared opponents.
Best against Iron-clad Staff (21.4%), Mace (14.3%), Hellfire Hands (14.3%). Struggles against Permafrost Prism (0.0%), Spiked Gauntlets (0.0%), Dawnsong (0.0%).
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.
