Compare the Seat Leon Cupra 300 - [2017] vs Ford Focus RS 2.3 Turbo - [2016]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Seat Leon Cupra 300 or the Ford Focus RS 2.3 Turbo. We'll leave it up to you to decide which is your favourite.