I have a 14' RMR. One small difference that I notice between the two is that there are two extra d-rings, stern and bow, set down low on the outside of the tube. I originally wondered why they were there since it was an odd position, then I got a trailer. Those d-rings set down low help when you are using a winch. Hooking your strap to that lower d-ring actually pulls the boat up onto the trailer a lot easier. The recent thread on using a winch with your boat reminded me of this difference. From what I saw on the NRS website, it doesn't appear the Outlaw has those d-rings.
Love the RMR. It's a huge upgrade from my last boat. That might not be saying much - last boat was a ca. 1980 14' Campways bucket boat, lovingly nicknamed the 'Blue Noodle' that's been down rivers in most of the western states - but the RMR is bomber and I can really load it up for multi-day trips.