Official Max Out Thread:

[Cubical]

AC/WC shouldn't negate 100% of damage maybe like 40-60% at max ac and wc should effect critical rate or make the average hit more constant and less random.

[Stephen]

Originally Posted by Cubical

AC/WC shouldn't negate 100% of damage maybe like 40-60% at max ac and wc should effect critical rate or make the average hit more constant and less random.

I feel that WC should improve critical damage, critical odds, and weapon speed while AC decreases the odds of critical (higher your AC, less likely a critical is performed against you) and slightly buff your healing speed.