To tell you the Grandmother's truth... I am not a real Dark Side bandwagon master. All of my sport bikes run on high quality MT and if i had a Rocket III i would most likely use an MT because ofcourse I need assurance that when I get sweet & low on the pavement the bike is gonna' go where I say...tracking correctly.

I would not change the manufactured set-up, except maybe try to go a tiny bit wider.

But i have a Rocket Touring and I am getting tired of riding wheelies and showing off. I did it and it was fun, but i just want to go straight on this bike with hard acceleration and the CT is just better at this. That is a fact.
Control: I agree that controlling the bike in general would be better with a MT, but that control is limited to the times when you are not wide open from a dead stop, and not braking with a requirement to stop immediately. It just depends on how important those 2 items are for you. At 860+ pounds the R3T does a pretty good job of ignoring the contact patch of a speeding rider