Archery is as balanced as it has ever been, it can do reasonable damage, they're weak to attacks and they can move freely without encurring too much of a problem.
As people have said, archers become viable around level 25 where you're finally able to actually do damage. Also, you're using a Horn bow and you expect be to doing well? Those things are flimsly little toy bows for kids! ;)
Archery is fairly easy but so is pretty much all the other builds (yes, manual blockers, just read to the end of the sentence) because you've got basic skills that you need to get in order to play any build with a reasonable level of competence, archery has the easiest one to start getting right and has the biggest rewards but becoming good at it requires a lot more hard work, taking the shots, shooting into melee in order to save an allies life, those sorts of things carry more risk and need to be refined more in order to be deemed good.
With manual blockers, it takes more work to get good with blocking but it's not a large step to start putting in the odd chamber (especially overheads against pikes, those I love to do! ^^)
Just give it some more time, level 23 means you're still a baby in terms of gameplay and generation two just means you're more likely to have played a short period of time compared to most of the good archers, therefore making your skills look inferior, which, don't get me wrong here, they are but you need to build on it.
Edit: That's what's been programmed into the game so that when the spacebar is pressed, this happens. (In effect I suppose the spacebar has had the effects of right mouse mapped to it as well if you have a ranged weapon)