I am only having a laugh Vlad.
As you know all Dyno's give different results, they are only really any use as a tuning aid. I quite like using delta dash road dyno to compare changes too.
Shaun and I are using the same RR, plus we also compare Road Dyno results, so we are getting some good comparison data.
P.S. There is no such car as an STi V9 Spec C, they stopped calling them V* on the STi6, post that they are known as MY**, My own car is an MY05 JDM STi which is often, incorectly known as a V9. (although some people mix them up, the V9 is the first widetrack car, the last MY Blobeye)