Phantom Twinblade is the 26th most-used weapon under the current filters (1.3% of 554,446 recorded fights), winning 63.5% overall - 2.7% of its wins come against better-geared opponents.
Best against Redemption Staff (96.6%), Lifetouch Staff (95.3%), Great Nature Staff (93.5%). Struggles against Carrioncaller (39.1%), Crystal Reaper (40.3%), Claymore (41.3%).
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.
