Hey Dan,
I recently exported a Quicktime movie with QT conversion from a 29.97 timeline, and I was positive about all my settings, and that movie info from QT read 10 fps! That very same movie went into After Effects and was exported as a new movie from a 29.97 project and that movie info from QT read 30 fps!
Both movies are doing there respective jobs, the second movie is happily playing in another 29.97 FCP sequence. So if it makes you feel less nervous, I’ve seen many dicrepancies like this in QT info. Another one is some mpegs for DVDSP read 640×480 and I know darn well they are 720×480. Go figure.