Dagger is the 32nd most-used weapon under the current filters (0.9% of 157,143 recorded fights), winning 51.3% overall - 11.5% of its wins come against better-geared opponents.
Best against Holy Staff (85.7%), Fire Staff (69.6%), Battleaxe (63.3%). Struggles against Battle Bracers (25.0%), Bear Paws (26.9%), Deathgivers (29.3%).
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.