It gets 'harder' relating to mechanics of different fights (really it depends on the fight) but if you know how to get hate and use your skills correctly nothings really different. you'll get circle of scorn for some good AoE aggro + decent damage and hallowed ground for those 'oh shit about to die' moments.

Overall what you end up doing on either tank isn't very difficult on it's own and depends on the mechanics. Out of Warrior and pally, warrior is the more complicated in regards to mitigating damage. (I personally have more fun with pally but maybe I'm just weird.)