... And don't even get me started on Shield of Discipline, a skill that never should have been implemented in the first way, because it offers way too much mitigation with 50% uptime. ....
... Hence I don't get why some people claim Champion is vastly superior in terms of tanking and Knight far worse (even read useless once or twice)...
shield of discipline was hardly nerfed some patches ago, where the damage migitation calculation was changed.
Secondly why ppl maybe claim so much about Champions is: you can effectively tank, do dps and heal as a champ in chain dps gear. Something that no other classes can. A raid of 12 champions is same effective running an instance like any other group. For fairness every class should get a skill like shield form and reaching full tank values in their dps gear or none class should have it. Actually there is no need atm doing other gear than chain. The joke was the healing ability of Champ/druid. Just saying but a leather gear rogue/priest or rogue/druid heals nothing while champ/druid is a good healer in dps gear.
It's all about fairness, balancing and class roles. Nobody can deny, that champions can do all jobs in a group effectively with 1 gear
Kind regards
Edit: I don't get the problem, why it would be a problem, if shield form can only be used with plate gear and disables ability to wear chain while active