As far as the HP wars...Dodge is on top by 707 miles. Even if Ford releases a GT500, until they put that engine in multiple vehicles, as Dodge had sone with their big dog, then Dodge still wins.
Actually, it's only by 57 miles. The ZL1 has 650HP. And it almost runs door-to-door with Hellcats. Imagine when/if it gets the ZR1 engine. Speaking of which, if you want to look at power alone, Chevy is actually winning now with the 750HP ZR1.