I have compared both. We are in the market for either of them. As a current owner of a TSX, I was impressed by the difference in quality between an Accord similarly equiped and an Acura. However, this time the Pilot stacks up better if you remove design from the equation. Sincerely, the rear interior of the Acura is covered with rat fur cloth while the Pilot recieves carpet and more tasteful and usefull plastic. The rear of an MDX has 2 seats, Pilot 3. No vents for rear occupants in the Acura. The wood-like material on the dash is plastic unless you opt for the sport model then you recive aluminum only on the center stack and cup holder. The touring model has acoustical glass on sound deadening just like the MDX. The Pilot recieves rear sunshades which the MDX does not offer. The MDX does not feature a 112V outlet in the center console, the Pilot does. The Acura does not feature front park assist the Pilot does. Power liftgate is not standard however, Pilot Touring it is. Upper hatch does not open on the MDX, Pilot it does. Luggage rack is not standard on MDX, Pilot it is. The list of features that the MDX does have that the Pilot doesn't is this (exclud. style):
Power tilt and telescope wheel;
HID Lo-Beams;
XM NavTraffic;
300HP 3.7L;
SH-AWD;
That is it. I love Acura and I love the dealership experience BUT this time Honda cheapened up the MDX. You should be able to match or beat every feature on the Acura for the $7-$9k premium. Don't get me wrong, I hope Honda fixes it and the guy at the Acura dealership swears that they are.