Bloodletter is the 6th most-used weapon under the current filters (2.9% of 441,426 recorded fights), winning 61.0% overall - 19.2% of its wins come against better-geared opponents.
Best against Occult Staff (96.0%), Wild Staff (95.2%), Nature Staff (95.0%). Struggles against Twin Slayers (28.6%), Bear Paws (31.5%), Claws (33.0%).
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.