Is this section new? It's the 3rd bullet in the "Improving your Priority" section:

"If all else is equal, Card Members who earned the Medallion Qualification Dollars (MQDs) Waiver by spending at least $25,000 in the current calendar year on their Delta SkyMiles Credit Card from American Express will enjoy higher priority."

So that means that at the same medallion level, fare class, etc without a Reserve card, medallions that qualified using AMEX exemption are ranked above those who qualified with normal MQD spend. That has the potential to be HUGE!

I should hit PM soon again with AMEX spend so i'm looking forward to seeing how the priority changes.