In that light, a +1 to Hit with a chosen weapon is not a big deal either - it's 5% difference. And on top of that, it's generally easy to hit stuff in Conan, so you don't even need those extra 5% as badly. On the other hand, a failed Save can kill you pretty quickly.
D20 in general is a system where small numbers add up. A +1 here and a +1 there may not appear much, but several of those flimsy bonuses become quite solid.
And if you compare the Shemitish -1 to the Cimmerian +1 to Will ... that's already 10% difference.
If I've a bow and you don't, and I've a better movement, you're dead.
Not only do you need the space to maneuver, you also get just one shot per round, and hardly a chance of MD, so even if the general plan works, it's going to be slow, tedious and boring and that's not how I want my games, don't know about you of course.