Paladin is the better tank, but Warrior is the better class

[Garnatian]

Um, how is shield swipe lackluster?

Only 40tp, doesn't break your chain, does an attack of 210 potency, pacification cancels many attacks. How is that lack luster? it's almost a free attack with the low cost.

Flash is better. More TP regeneration, more threat.

You should be using Flash every time you're capped on MP in boss fights you feel TP is going to become an issue. I'm sorry to tell you, but the only benefit Shield Swipe presents is a net-gain in DPS, and even then, it's incredibly small compared to just the 3-combo.