so martin , according to the dyno there is about 10 ish kw difference . But carsales has this in their reviews -
"Despite a significant increase in output, now 390kW/612Nm against the predecessor's 357kW/588Nm, the GT-R is so tactile in delivering its mother-load that one would really need to be insensitive to such astounding figures to make a schemozzle of proceedings."
that's at 33kw difference , one car is either over stating or the other car is under stating.