I'm actually quite impressed with how close Dirac v2 got to the user-validated measurements with REW, but I know a lot of others aren't. v1 did seem to get a lot of flack for being inconsistent and over-correcting to the standard Dirac target curve so everything sounds the same, but if you know what you're doing then it's a hugely powerful and flexible system. Moreso with the imminent BM update. I only use it correct the frequency response of the Sub and Front L&R below 500Hz whilst tracking the FR of my speakers, and integrates everything really well.Well done - great result by the sound if it and another confirmation that we are on to something here I feel!
As others have pointed out here and other threads, the latest version does seem a lot more bombastic in the bass so that is another confounding factor when trying to assess any clear impact of these changes.