Astral Staff is the 102nd most-used weapon under the current filters (0.2% of 980,320 recorded fights), winning 52.2% overall - 5.0% of its wins come against better-geared opponents.
Best against Redemption Staff (100.0%), Hallowfall (95.2%), Holy Staff (72.2%). Struggles against Bow (11.4%), Hellfire Hands (16.7%), Crystal Reaper (21.7%).
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.