[Draenin]

There is no need to divide these numbers. A simple check for whether or not the player's current WC beats the enemy's AC is all that's needed. Reworking these algorithms to include a new 'accuracy' percentage (which is basically what you seem to be doing) is unwise because hitting someone with High AC is already difficult to do, and lowering the attacker's accuracy based on the enemy's AC will make players hit each other even less.

Take this advice from a dude who's already written a complete set of battle algorithms.