I understand that you cannot grasp that many factors affect your chance to hit something as an archer:
- Your character's dexterity - Your opponent's dexterity and armor rating - Your perception, affecting accuracy (or in other words, precision) over distance - Environment (smoke etc.) - A lot of other factors that we may not be aware of
If you have a 49% chance to hit a target, whether you attack an enemy with tons or armor or no armor at all, you're still attacking the target with a 49% chance with every attack you do no matter what. Except it's an adjusted 49% chance to hit.
