Well, your explanation makes sense to me, but probably the only consensus here is that I am not an expert. However, I wonder if increasing the horsepower and maintaining speed with lower RPMs would necessarily equate to the engine being more fuel efficient.
I was a substitute teacher out in Queen Creek and San Tan Valley before joining the Army in 2008. My sister lived out there and we called the whole area Queen Creek before it officially became San Tan.
I just remember trying to find new schools for the first time and intersections were missing street signs. That is my main association with Queen Creek, although I wonder if that was the unincorporated portion.
I once stopped at the Filiberto's and had never seen orange salsa. I loved it!
Welcome to the site!