I don't know why people are so fixated on Maul; Discharge and Shock with the Surging Charge hit are brutal, too.
It's great single target spike DPS, and is actually fairly sustained as well, but certainly has a better - or at least more reliable - opening. Using Recklessness, and reducing it's active cool-down almost entirely by dropping combat, essentially resetting it.
I was fond of Deception before 2.0 even; they could put a ton of pressure on a healer. The good ones were probably the most irritating to deal with, as a healer, out of 'most-all classes. As it stands now, it is certainly better than before, as well as being more forgiving and simple to excel at - not overly, but the difference is there.
Is it too much, though? Hard to say at the moment with people's gear, and the bolster system, but I personally don't think it's overpowered. I am aware that it is very powerful, but it has it's weaknesses as well, and I'm glad to see it as more favourable for end game doings!