All very well said Nick.  I can see plenty of reasons why a 20 HP improvement in peak-against-peak comparison could make a huge improvement overal

For me, "consider the source" applies here too.  RC doesn't say things like this without certainty on his part, and that usually means inside information, and Porsche is generally pretty conservative on these figures.  So word from RC is pretty solid.

I could carry on further about performance curves, other areas of incremental improvement and so on, but I'm confident in the source and the science on subject here.  Perhaps, after further involvement at RT, "Herbaliser" will come to appreciate that.