Not sure if this is a re-post but an utterly useless comparison imo. Considering that the X6 50i was clocked at 4.8sec 0-60...that's valid cause to pit the X6 against the Cayenne Turbo S and ML63 AMG.

http://www.automobilemag.com/reviews...50i/index.html

I just can't seem to put a finger on how they arrive at their decision to compare vehicles. Just because they're V8 and top of their models? Perhaps they'll give us a more spirited comparison with the X5/X6 ///M...