ORIGINAL: Axel
I will have to agree. The driver thing probably comes in a big here as I've noticed that I take it a bit slower with this six speed. It terms of acceleration, I do think the Mustang has it just a little bit. Weight is a big killer of that displacement. As for everything else, I love the Challenger over the Stang. It just seems more comfortable, more room, better handeling. Overall I love the Challenger over the Mustang, but if the R/T had the 6.1L like the concept, it would have been a little more fun if you will, and more expensive.
You've got the handling thing dead-on there Axel. The Challenger R/T definitely handles turns and rough roads better than a stock 2005-2009 Mustang GT. I have not driven a Mustang Bullitt but I suspect the Bullitt handles comparable to the Challenger R/T.
Comfort is another area I believe the Challenger has the upper hand. That and being able to handle 3 kids in the back seat.