Some usefull info
CUBE comp series road bikes have a 2cm sloping top tube and are measured in a virtual manner, for the average person buy a size up from usual as a 56cm will measure centre to top 54cm.
All bikes are DIN plus tested, and are good value because money is not wasted on paying riders to race the Tour.
My advice buy fom your best LBS….service is worth it's weight
Plus any bike at 1000quid is going to be great, it's riding that matters
Dan