In 8-Man Content, you might want to bring a WAR, because while OT, he can do a nice dps output, which you really want(ed) with you in FCoB.

I did all to 50, and WAR was quite another style of Tanking than PLD (which is basically 1,2,3,$Cooldown)

You have more different Rotations, and with the Wrath Stack system, you have to have more rhytm and foresight about when a big hit comes, than a PLD where you can basically do "oh shit, castbar, use $Cooldown" and building up aggro the rest of it with 1,2,3,...

Therefore, my opinion, good tanking with a WAR is no braindead action where you can watch House of Cards on your second screen, therefore most ppl suck at it (including me, i would never dare to goto FCoB with my war)