I tank on both but PLD is only really better on Chimera as far as dungeons go. Ifrt extreme was PLD too and I have a Curtana. I actually know how to tank quite well and also have more experience than you as you clearly admitted. We may both understand the enmity system but I have applied that knowledge in more situations.

Just last night I decided to try something different on WAR and swapled my HDL gauntlets for felt bracers with str+50, just to see if I could hold hate but do a bit more damage. Nope, it got ripped off me, just barely, about 70% into the fight. Was easy to get it back but it showed me that I need every piece of enmity gear I wear in a zerg like that. It's a delicate balance sometimes, other times it isn't. PLD certainly widens the gaps at times but conditions also need to be right. You can throw a PLD at any mob, sure, but that doesn't means it's the best choice every time.