My 2013 GS is in for service and Park Place put me in a 2016 RX350 and it def. feels faster than the 7.7 sec Lexus claims on the website. The 2010 RX my wife drives compared to the 2016 feels about the same from an acceleration stand point and I've clocked the 2010 at 6.9 with my buddies Vbox Performance unit. But the new 4th gen rides higher and feels much more quiet and composed on the road in comparison to the 3rd gen we own.

 

10m44s
Honda Pilot uses the same engine and transmission in this the video(3.5L+9 speed). So it should be similar to the MDX