As an azir main (a trash one, but one nonetheless), he is actually an extremely strong champ. The only reason very few people play him is because of his high difficulty. Think about it, he can push, defend, poke, harass, displace, dash, farm safely. He has good sustained damage and strong burst late game. It's very rare to see someone play azir except in the higher elos, where azir one-tricks can obliterate the enemy team. Mind you, S's arent based off damage done, they are calculated by kda, warding, and farming, so why not show his stats instead of just his damage done.