Gamma Differences

Wow, so I've known for a while now that Quicktime X and 7 use different gamma settings when playing video. But until now the differences have been mostly minor. That is, until I compared something I shot the other day:

QT X on top, QT 7 on bottom

The video in Quicktime 7 (the lower one) most closely matches the way the footage was shot.  Yes, it's a little too red (and we really needed to adjust our fill light!) but that's not the point.  Color correction has yet to happen. Compare it to how QT X shows it.  Amazing!  I have to admit I haven't fully wrapped my head around this problem but it really makes me second guess things.

The bottom line is the way QT 7 plays back the clip matches the way it looks in Final Cut and the way it looks on my "broadcast" monitor.  But how will the client view things?  Scary...