Auto express are guessing, they have no idea. They were at the same convention as a mate that runs the CTRO forum and they said nothing of a new Type R, let along a turbo motor. No one knows.
The fact is a car thats a second slower to 60 is only going to be a car or two lengths behind by 60. Moving past a car at a very fast speed when accelerating from 30 to 80mph would require double the other cars horsepower at least. In the real world the difference is minimal. Over 50mph of distance i edged past the CTR. From stand still i edged past until i was a few car lengths ahead.
It is easy. Im not ragging it to the limit. But a 200bhp car that weight 1200KG is not going to be that much slower than a car that weighs about 1500kg with only 80bhp more.