Ok so basically we are down to that, since the companion certificate in my case is as useless as the Amex one, the Delta card would only give me the MQD waiver and some bonus MQMs, at the cost of getting 2x miles instead of 5x, correct?
I'm still not sold to that card just for the silly waiver, I wonder if I should just not switch my main residence to my alternate home in Europe and get rid of the MQD question once and for all.