Don’t start that again. It’s difficult to craft and takes a lot of strength. That’s reasonable balance. You could do a lot more damage with 18 strength and an equivalent melee weapon. It does get adjusted slightly in my oncoming PR though.
Yes it’s intended, at least until I add a bow kit.
My usual metric for justifying bow damages is that there are a number of reported and documented cases of killing elephants with 80lb compound bows, whereas the greatbow in the game is around 180lbs. The minimum recommended gun cartridge for killing elephants reliably (based on a cursory google) is .375 H&H Magnum, which under the current system would do around 75 base damage.
Also, at what point in the game are you making this? If you can make one I can only assume you have plentiful access to far better options, like high calibre rifles. It’s also worth noting that equivalent melee weapons (I used a halberd for testing) did about twice as much damage as the compound greatbow at 18 strength.