200m not his strongest but he is still very strong. World class standards definitely, especially when he transitioned to shorter distances.mens 800m freestyle and womens 1500m freestyle are new Olympics events for swimming this year.
Sun Yang at his peak performance, competed in 200m, 400m and 1500m, just because 800m was not available. 200m freestyle was not really his strong event.
Yep a pity 800m wasn't included during his peak years, it's included in the world championship though, no question he would have more Olympic gold medals, he was unbeatable at these distances. However we have to consider at later stages of his career when he specialized at shorter distances of 200 and 400m, his 1500m times suffered. It's extremely hard to be world class at all 200/400/800/1500m.
Also before his time, there was zhang lin and he probably could medal too with in 800m.