Edmunds editors James Riswick and Mike Monticello put the 2015 Ford Mustang GT and Dodge Challenger R/T head to head, evaluating performance, comfort, interior quality, and value on identical terms. It’s a debate that enthusiast forums have argued endlessly without ever reaching a real consensus. The two editors don’t fully agree by the end, and their disagreement reveals just how differently buyers can define what makes a muscle car worth owning. See which car actually wins when the comparison is done properly.