According to the AD&D PHB the following weapons do less damage v. Large opponents: Hand Axe, Bec de Corbin, Bo Stick, Club, Dagger, Dart, Guisarme, Lucern Hammer, Hammer, Jo Stick, Footman's Mace, Horseman's Mace, Morningstar, Horseman's Military Pick, and Broad Sword. The Footman's Flail does...