Good effort Sammy, good to see.
And as for the comparing issue, you can only compare if you run both your cars on the same dyno at the same time, no point saying I got X @ so and so...it doesn't work like that
I pulled 187kw on a dyno that I use a bit, went back a few months later and pulled 147kw with no change in performance (mainline had been out to service and settings had changed) after tuning the car was up to 188kw (40kw gain) and I know for a fact if I throw it on a Dyno Dynamics I'll be getting around 230kw+
Dynos are awesome tuning tools and aren't good for comparisons as none follow the same setup or standards