Look at your top tube. It is horizontal. Many frames have downward sloping toptubes, so by the time they are at the seatpost they are quite a bit lower than horizontal top tube bikes - resulting in more exposed seat post.

In addition to that, many professionals will often use a bike that is slightly smaller, and just put a longer stem on and move the saddle up and back to keep the same fit. You can get more drop this way, and it's said the frame is stiffer as well.