I also joined the Rhino class as my last alt. Yes, the ability to do heals, revs, and buffs are nice, but the damage output is pretty frustrating overall. At 33, you may have not felt the gap yet, but as the mobs get harder, it will become more apparent.

Also, as a high armoured toon with the ability to rev, you spend a lot of time running around trying to rev party members after they all die off.