Belle-Nuit Test chart, shows gamma too. Import into Avid with the 709 setting ("leave untouched"). Try and accomplish the same in FCP. I couldn't make it work.
ProRes again, probably. My guess is that it has a display correction to adjust internal video levels for display on desktop monitors. That said, it causes troubles everywhere. I would love for it to go away.if for example created a spot in fcp from start to finish
and import that into AVID and chose 709 on import, levels are not right