Avoidance will scale about 1% damage reduction per 176.71899 points, and Mastery will scale at .675% (see note) damage reduction per 'rank'. Avoidance requires 176.71899 per 1% so we can assume it will work out to .00565% damage reduction per point. While mastery will be .00796% damage reduction per point (based on 84.74 points per mastery 'rank', aka citation needed)
So provided that boss damage averages out over a infinite duration, mastery appears better then avoidance.. in terms of random events.
So the numbers seem to suggest that mastery is better then avoidance.
Note: how did I arrive at that number, 30% damage lost on a block, 60% damage lost on a crit block, seeing as equal chance of normal or crit means that you have a 45% damage reduction a 'block event' which happen 1.5% of the time per 'rank' of mastery. So you have a 45% damage reduction 1.5% of the time will mean (1.5 * 45 = 67.5).
Last edited by leethaxor; 12-18-2010 at 06:56 PM.
[Today 06:48 PM] Ion:swimming in a natural body of water ISN'T acceptable...it's momentarily tolerable