What is the difference between an Audi A7 Quattro and an Audi A7 Sportback?

I'm looking to purchase a new Audi A7 and I'm wondering what the difference is between the Quattro and Sportback models. Will there be a significant difference in performance or features?

Another difference is the body style. The Quattro model has a sleeker, more coupe-like design, while the Sportback has a more traditional sedan style. This may impact the visibility and interior space of the vehicle.