He Zhi Wen, he is way over 50 and still qualified for the 2016 Olympic games. At 50 he was still in the top 30. Currently he is #78.
Tell me if it is possible for someone over 50 to be in the top 100 in tennis? In soccer (football)? In basketball? Even in baseball where you can have guys who hit and don't play the field or pitchers who don't have to hit, nobody can play at his age. And baseball is the least athletic sport/game I can think of in many ways. Wikipedia says he was born in 1962 which makes him 54. But I remember 7 years ago it had him listed as 51. So, I think Spain or somebody, may be playing with his date of birth because he is still their best player.
Think about how small and light a table tennis ball is and how little force you actually need to propel it fast. A lot of us are using way more force than we need.
Touch, feel, skill, these things are much more important ultimately, than sheer power.
Yes, the best players have touch, feel, skill and sheer power. But even guys like FZD and Ovtcharov are not really in such great shape physically. Sorry, but....it is much more about skill than brute force. Or the women in the sport could not be so much closer to the men in level than in any other sport. In basketball or soccer, if you watch the women and compare the level to the men, it is way way lower. In tennis too. They are not strong and athletic enough to really compete with the men. But in table tennis, the women are no where near as far behind. They are not quite as good. But a top woman could probably play competitively against men WR#60 or lower. Perhaps it is even higher than that.