You guys are misled. Holy shield can make a tankadin above 102.4% uncrushable with only kara gear or even lower. I don't count on redoubt. Actually paladins only take redoubt talent to get the subsequent shield absorption talent.
Holy shield has 8 charges in 8s instead of warrior shield block 's 2 charges in 5s. My holy shield never is used up. I have wws report to prove I got 0 crushings on Lurker adn Gruul, keeping holy shield up all the time. (My avg hit from Lurker was only 3980. ) Thats avoiding a 9k crushing hit from Lurker. I have seen wws reports whenw warriors tank them and they get crushings on Tidewalker, Lurker, Gruul, 5 crushings every 3 minutes, making their hp go to 5% hp nearly dieing or dieing every time.
Holy shield is op , we dont get burst dmg like warriors!