ref: comparing with X3 or Q5
For me, it is about driving height. I'm unconformable driving too high from the ground. As such, I'm not interested in the X3 or Q5. That said, I admit I have not tried either - just too many SUV rentals while traveling. The wagon has also a better environmental friendly persona in my opinion (and that has a price marketing wise).
Limited choices for a sport wagon with 4WD in near luxury. 328i XDrive touring or Audi AllRoad are the only contender in my book. They are both similar in prices. I'm also a sucker and will pay the premium for the wagon.
I'm still holding out until I can test drive one... and until to hear additional information about the Diesel xDrive version assuming it is coming this year.