No.
This is the first Mustang I dislike the look of entirely. I've been impartial to all the others up until now. This is bad.
Also, apparently the new I-4 Ecoboost is predicted to have better specs than the old V-6. I guess chalk one up for ecoboost, even though imports have been competing with smaller engines for a while now.
EDIT: Also Jack, I'm pretty sure your looking at different models. The V-6 makes ~300 HP, and has for a while. It never made 650 HP factory. You're comparing it to the Shelby GT500. Big mistake there.
EDIT 2: Speaking of ridiculous power from a V-6, throwing in a GT-R just to make 'Muricun's mad.