I am not sure if the detailing is any different but I think the materials are different. The designer hand-picked out the leather and the wood trim details are unique to the car. There is also a custom shift knob and dashboard details as well as a custom pearl black paint job only available on that car. Also there are unique wheels and apparently (although I am no expert) it borrows some grill and front facia elements off of the SRT8.
There hasn't been many detailed information or photos about it so everything is speculation based upon pictures at this point.
Chrysler just put up a new link with photos of the car – many of which have been seen before but if you haven't I would recommend taking a look.
http://www.chrysler.com/en/2013/300c...mited-edition/
I am, maybe like you, not a huge fan of having all of the branding on the seats and the – and the trunk (I'll probably take off the trunk badging) but I do really think the car looks sharp and I love the contemporary details and styling.