At lower levels, THMs are better served attacking their own mobs, considering how fast they can burn through them. CNJs too.

Honestly, levelling MRD now is a pain compared to how it used to be. Before the ability overhaul, sure-- you run in, mash out Broad/Full Swing to get hate on everything, do some basic attacks, and you were golden. Now, you don't get any AoEs until Overpower at 30, you generate TP slower than a DRG... the only saving grace is that at least you have some kind of offensive stance (Berserk) for a damage boost, but it falls off far easier than Power Surge if you're actually off-tanking or DPSing enough.

WAR will give you a great AoE, two emnity tools, a mitigation move, and Mighty Strikes. You are, however, going to be a tank, or a very tanky DD that has great AoEs.