Because everyone is good, that's why he doesn't have a gold medal. Look at the intros for that race, everyone was 3:35 or under, half were under 3:33 -- everyone is good, it's a big world out there. Step outside your local fun run, please. Kiprop is a better, more talented runner than Centro, probably always will be.
Look at UO's history of distance running, right now Centro has most of them beat when it comes to international medals. Cruz has a gold, right? Not sure his WC status -- I'll look it up. Dellinger has a bronze in the Olympics.
Centrowitz is a great racer, it's fun to watch him. If that makes me a "fanboy" so be it. It's better than getting trounced at each WC's and Olympics (I like Manzano, too). The world has great racers and Centro is one of them. How is he "massively overrated"?
I return you to your Main Street Mile run run, good luck breaking 6:00!