Here's my Tanking spec in Dragon Quest
Warrior - 100 Points in Courage (Level 38)
Priest - 100 Points in Faith (Level 38)
Mage - 88 Points in Spellcraft (Level 35)
Martial Artist - 42 Points in Focus (Level 21)
Thief - 32 Points in Acquisitiveness (Level 18)
Minstrel - 68 Points in Litheness (Level 30)
Gladiator - 100 Points in Guts (Level 38)
Armentalist - 100 Points in Fource (Level 38)
Paladin - 100 Points in Virtue (Level 38)
Ranger - 42 Points in Ruggedness (Level 21)
Sage - 100 Points in Enlightenment (Level 38)
Luminary - 68 Points in Je Ne Sais Quoi (Level 30)
OTHER - 100 Points in Shield (?)
OTHER - 100 Points in *ANY WEAPON* (?)
End as Paladin
This includes the max potential for healing AND tanking for a paladin