Here's an interesting look at the emerging capability of the F-35:
Maybe It Shouldn't Be Lightning II But 'Chief II
When you consider the reach of the technology that is being integrated in the F-35 in comparison to the state-of-the-art in the late 1950s when the venerable F-105 was developed you begin to agree with the parallel.
I had occasion over the years to correspond with Dr. Kopp many times. In fact, we became friends back when he was just plain old, Carlo. He's a good guy and knows his craft.