Once upon a time (and earlier this year), flying the MP qualifying partners (DL/NW/AA) in paid or discounted paid premium classes got not only the bonus F miles, plus bonus Q miles. I received them on AA, NW, and DL this year (as well as AS). I did a lot of my planning toward the 75K bonus level on this.

This seems no longer to be the case. On DL recently, I received 250% credits for the flights (flight miles, MVPG bonus, F bonus), but no longer the 150% Q miles for the flights.

This past weekend, I just flew NW, and received only 200% (flight miles and MVPG bonus), but NO Q MILES and NO BONUS MILES for flights booked into F.

This has turned into an incredible waste of money, as I flew the paid F so I'd have less to fly to get to this level.

From the AS website for NW:
Mileage Earned:
500 miles, or actual flight miles, whichever is greater
25% bonus for purchased World Business Class; 50% bonus for purchased First Class

It doesn't mention Q miles, but I didn't even get the 50% bonus at all. I received it earlier this year.