actually, I am pretty sure that the X-Drive system took after the Honda/Acura developed SH-AWD with Torque Vectoring. I think Torque Vectoring is what makes all the difference....It was first introduced in 2004 on a 2005 Acura RL SH-AWD/Honda Legend...
Check out this Video of the new 2010 MDX against the Q7 and RX...
[u2b]http://www.youtube.com/watch?v=YidkaqlW9ns&feature=related
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