That was a German mag, so it's no surprise they picked a German bike as #1 over an English bike.
Here's a Motorcycle Consumer News comparison between the 1050 S3 and the Buell XB12S Lightning
Bug Eyed Street Fighters
Warning: This article seems to be Buell biased, and tries to make it seem like an even comparison even when their own data prove otherwise. For instance, they go on and on about the Buell's "Advanced Brakes" only to have the Speed Triple destroy the Buell in stopping distance.
Still a pretty good article.