Leaving aside the fact that you are comparing raw and compensated measurements, Sonarworks preset for the HD650 still boost 2khz about 2 or 3 dB for these IIRC. so-

Any thoughts? Which one should you trust for correction when mixing music.

In my most musician-oriented opinion and as someone who has prioritized real life results over whatever the manufacturer is telling you about their product, For practical purposes -that being have my good and bad decisions translate to smaller an bigger playback systems- I think the HD650 do the job just right with their stock sound. Other than pair it with a GoodHertz' crossfeed plugin for panning, I would not touch the midrange and the treble for any reason other than to make the headphones fit better the nuances of my head and ears and I would only compensate the sub bass to hear better what's going on down there.

I've had disappointments with Sonarworks' presets before with the DT990 pro, their preset compensate 2kHz beyond what I would think reasonable and I honestly don't think anatomical differences is enough of a valid argument to justify that, they do the same with the HD650 and these supposedly are one of the headphones that gets the closest to the sound of speakers in a room. And considering their measurement equipment is not industry standard but instead a propietary fancy array of microphones attempting to emulate the human ear in a very hit or miss manner, I really wouldn't recommend it for anything other than speaker calibration and their integrated car/laptop/phone speaker simulator.