It's good to know that Audi Drive Select with its associated technologies make for a noticeable difference. However, it seems ADS is available for the A5/S5 (or soon will be), as it is a checkbox option when you go to configure your A5/S5 on audi.de website.
If Audi ever decided to offer Magnetic Ride for their coupe range, I'm willing to bet those numbers would be even better and might give BMW a run for their money in the handling department.