Here is C63 AMG test drive on Youtube:
The engine is TT V8 with 503 hp and 516 lb-ft. vs ATS-V TT v6 with 455 horsepower and 445 lb-ft.
I wonder if ATS-v will be able to keep up specially that MB is lighter.
I like the Cadillacs looks better.
I wonder how will the price compare for similarly equipped cars.