What you say here is very true... but from a common sense standpoint, it's really moot anytime you get much over 500 horsepower in a car that weighs 2,800 pounds because number one, it is almost impossible to hook up that kind of power on the street with tires that are street-legal and two. a 2,800-pound car that has over 500 hp is scary-fast already, so what's the point. unless you're just building a race car for the street?
Any car with 500 horsepower that is that very light, is going to go over 130mph in the quarter, which is insane on the street under any conceivable circumstances.
So, it boils down to the methodology you prefer to get you there, I think. Do you want to fool with the (available, but complicated) technology necessary to make a LOT of horsepower with (considerable) boost on a wedge engine, or would you prefer to, instead, spend a lot of money for the cosmetic advantages afforded you by a naturally-aspirated, big-inch Hemi, with the (necessary) exotic parts that can deliver that kind of performance?
You pays your money and you takes your choice...:banghead: