So after gathering all the damage numbers for Guild Training Hall, I noticed a lot of weapons shared damage.
-There are the obvious things, like Gran Faust and Divine Avenger being identical in damage values. Other obvious ones are Flamberge/Rigadoon, Flourish/Thorn Blade, Triglav/Suda, Pepperbox/Plague, all the status alchemers, all the brandishes, Umbra/Nova, all the haze bombs, Iron Slug/Callahan, DBB/Nitro, the four pure damage shards bomb, the two specialty shard bombs, and Hunting Blade/Venom Striker.
-Valiance' regular shots match up with non-ghost strikes of Wild Hunting Blade.