Wow is all I can say with this one from FT. What a nice catch. Now, notice how many miles for the best CPM is including the non-upgradeable JFK-LAX both ways. If you look in SEPT (the best month EVER for runs) you can pick all routes that do give a lower yield but you can pick all upgrade legs. Your call if you want a shot at the big seats or just want max points. Here are the max point option:
7,306MQMs at 3.8CPM
Bookable on Delta.com
DM yields a sweet 16,440 Skymiles per CWSI.net!
Again, be sure to look at all routes that are best for you not just the best price.