From C&D 

If there’s one thing that’s not in short supply at AMG, it’s confidence. Tobias Moers, Mercedes-AMG’s chairman and CEO, told us in no uncertain terms to compare the latest version of the brand’s sports car, the GT R, against the Porsche 911 GT3 RS. “Our car is faster,” he said. And when we asked where, the reply was as abrupt as it was unequivocal: “Everywhere.”

http://www.caranddriver.com/reviews/2018-mercedes-amg-gt-r-first-drive-review