[gallery link="none" columns="1" size="full" ids="44639"] words: Bill, video: carwow When it comes to Mat Watson and getting his hands on the latest and greatest, you know it's going to be fun. In this video, he takes the wheel behind an Audi RS 6 Avant and puts it up against an AMG E63, a BMW M5 Competition, and a Porsche Panamera. If you're familiar with Mat, he puts them through a drag race, a rolling race, and a brake test. So how did our favorite Audi do? Well...let's just say... ...