I can calculate with mastery instead:
600 parry (600 * 0.35) + 600 mast (600 * 0.70) = 210 + 420 = 630
600 haste (600 * 1.00) + 600 crit (600 * 0.00) = 600 + 0 = 600
I haven't seen any/many high level prot paladins right now that have enough expertise lying around to not be reforging into expertise. So I think it was still a valid comparison before. This one is much closer but it still brings the point home: the tank cloak isn't at all poorly itemized according to damage smoothing metrics.