To be clear, I wasn't saying "ha, see how much more power the LS3 makes!" but rather just reinforcing the point that they are similar power levels despite the "low tech" push rod technology in the LS3.
Looks like I was wrong on the weight, I grabbed that off of Camaro5 and it was incorrect. 18 lbs. isn't much, but it does matter. The LS still carries it's weight down lower which is better from a handling perspective, and it still wins in the packaging and simplicity of design.
Again, combined MPG is 19 for the respective cars. Camaro is slightly better in the city and Mustang slightly better on the highway. Part of that is going to be the car that they are packaged in, as the Corvette has shown that the LS engines can do very well in a low drag package.
I just want to be very clear, I am in no way saying that the Coyote is a piece of junk. My whole point is that the move to overhead cams instead of pushrods hasn't proven to create a much better engine. The LS series matches the Coyote in power and fuel economy, and wins in simplicity and packaging. Think about this - For pretty much every car, there is a Chevy LS swap kit. BMW 3-series? LS swap available. Miata? LS swap available. They are cheap and can make great power, and you can fit them in just about anything. You won't easily fit a Coyote in a Miata. Also, you can find an LS motor in any junkyard at any time for a small amount of money. How many Coyotes are out there? If you find a good one, you will pay for it.