Even tho you keep the rolling circumference similar, therefore maintaining the same wheel to arch gap and ride height, the car will appear higher with a larger arch gap on bigger wheels. It's just one of those inexplainable visual illusions. I believe that the GTD is also a smidge higher than the GTI which will not help the cause.
The other consideration is that larger, open spoked wheels will make your tiny brakes look even smaller.
Wheels can make or break the look of a car, but often they need other mods with them to pull them off well.
