We still have too little data to guess whether our planetary system is special. Transits and Doppler wobbles are being detected in only a small fraction of the stars we observe. One reason is time: it takes an a few orbits to establish a pattern. So it's only natural that most of the systems we've found have been compact. They're they low-hanging fruit. It will take a bit longer to get a good statistical understanding of the proportion of less compact systems.