"Meanwhile, Ford, which has OHC engines, is most behind the curve on power"
I believe you will find the new Shelby Cobra with the supercharged 5.4L DOHC 450hp engine far from "behind the curve on power."
But look at most of Ford's engines; the 3.0 V-6 in the Five Hundred is woefully underpowered by today's standards. Look at the 4.6 V-8 in the Crown Vic. What does that put out? 218 hp? I have a 4.6 Triton in my F-150. A decent engine, but certainly a little bit underpowered by today's standards.
The 3V 4.6 in the Mustang is a good step forward, at least.