I'm not suggesting that dyno checks be used as a complete replacement for engine stripdowns as there is always a margin of error. But, in response to Lee's question "Yeah, can anyone confirm that this could be accurate?", it's accurate enough to give an indication of whether further investigation is merited.

If the top 3 bikes are all within expected BHP and torque parameters, unless there's a protest, I can't see what's to be gained from stripping the motor. It's a VERY expensive process getting an engine rebuilt as it really needs substantial expertise.

Personally, I wouldn't contemplate putting an engine back together myself when I knew it had to reliably withstand up to 16000rpm and extended use in safety critical conditions. I'm certainly not capable of dialling in cams and suchlike so paying an expert to do it is the only option.