Double miles doesn't mean much to me. I am sure it is based on your EQDs and with cheap fares around, the mileage earn rates are quite low. Had a trip last month to LA which earned about 6500 EQMs. The actual miles earned based on the fare was less than 2,000 miles. In the old days, this trip would have earned me 13,000 miles. I am willing to bet that the T&Cs award miles based on EQDs prior to any elite kicker.