The thing about Pld is that everything is that it's timed to the second and lines up really well. DoT's go off without a hitch, and you can sustain your enmity lead without too much concern, even with Pld's lower enmity gen. Their combos flow so smoothly into one another that it makes their rotation the most fluid of the three tanks, especially because they don't suffer the same clutter of oGCDs (drk's) or buff stacks (war). Personally, I don't find that "odd," per se. I actually like the way that everything on Pld can be timed out on a stop watch.

If there's anything that I do find unusual about Royal Authority it isn't its placement. It's the lack of effect. RA has no additional effects other than a straight boost to dps. The lack of enmity generation makes perfect sense, because if it did have a bonus we'd have no use for RoH, but the lack of any kind of status effect (to self or the enemy) is kind of strange. The absence of any such feature kind of makes RA the odd tank combo out, because it's the only one out of all three tanks that does absolutely nothing other than Dps. That's not necessarily a bad thing or a problem, mind you, but I do find it kind of odd. It's like SE ran out of ideas, or something.