Donjo - the shield is irrelevant since every build has it.

165 vs 163 makes zero difference. I was just using parse data for my calculation.

Just spammed cure 1 on my i124 whm the average was 2017 for non crits. So a WHM can't heal the difference between 340 parry and 580 even assuming 8 attack rounds which isn't realistic. The mobs would have to deal 1200 a hit or you'd have to have 16 mobs on you for the parry to start to matter.