This bow was given to the minotaur, otherwise he couldn't do anything in ranged combat (and participating in melee combat with three necromancers and a Titan isn't very appealing either :)),
I tried giving this bow to the Titan, but there's almost no difference between it and the crossbow (with the crossbow: -10 attack, -4 damage).
But I still have a question: has anyone had the patience to complete the game with 2 or 3 characters?
But I completed the arena on level 150 with 2 heroes (a dark elf and a lich), on the Lord difficulty.