WAR:

Raw Intuition (20%) x IB (20%) x Vengeance (30%) = 55.2% damage reduction. (223.21% eHP)

PLD:

Rampart (20%) x Sentinel (40%) x Sheltron (20%~28%) = 61.6%~65.44% damage reduction. (260.42%~289.35% eHP)

If you add Thrill of Battle, WAR will win in terms of effective HP against a kite (20%) shield, but loses regardless against a tower (28%+) one.