Actually the enhanced dwarven crossbow is stornger then the dragon bone bow, its the strongest achery weapon in the game
Yeah,
My enhanced dwarven legendary is 325, while I think my dragonbone legendary bow is 317?. I have fortify archery on some pieces of gear,
but did not go heavily into the archery damage perk (that first one.)
Both are also double enchanted plus 29 fire, plus 29 frost (you can't "see" this listed on the crossbow, after doing it, since the
"ignores 50 percent of armor" takes up that space.)
The main advantage is already being able to shoot with the crossbow, not worrying about it being fully drawn back and such.
Plus, exploding 14 damage dwarven bolts. Meanwhile, the bow has 25 damage dragonbone arrows.