As the seat tube gets longer, or taller, it will extend further over the rear wheel because of the angle. So a 52cm will have the edge of the seat tube overlapping the tire by 2cm, and a 63cm frame would have it overlapping by 5cm. (Just an example, don't anyone go measuring on me now.)
So instead a frame could extend out the chainstays like 1cm for every 3cm longer the seat tube is, to maintain the same feel in the rear end. Most the time on an aggressive frame like that you want the wheel to be as close to the seat tube as possible though.