Dagger is the 36th most-used weapon under the current filters (1.0% of 180,760 recorded fights), winning 48.6% overall - 12.3% of its wins come against better-geared opponents.
Best against Holy Staff (77.3%), Druidic Staff (74.3%), Longbow (62.5%). Struggles against Energy Shaper (20.0%), Frost Staff (20.8%), Fists of Avalon (25.8%).
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.
