Infernal Staff is the 67th most-used weapon under the current filters (0.5% of 1,154,365 recorded fights), winning 50.8% overall - 8.6% of its wins come against better-geared opponents.
Best against Nature Staff (90.0%), Incubus Mace (82.8%), Hallowfall (80.0%). Struggles against Dawnsong (15.0%), Flamewalker Staff (17.9%), Lightcaller (20.7%).
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.