Reaching a consensus on who is the best defensive player isn't really based on stats, while that too matters a lot, but it is about who is making defense as their main job and do a good job of it. Draymond Green is not winning this year (if he does) because he is doing amazing, while he is doing alright, he would only win, because of the fact that nobody was outstanding this season so far at all.
I have always hated him, he is a dirty player who has no place in this league and always considered Klay was the wrong one to leave, Draymond should have left, but he does the dirty job and he does the passing and starting the plays, so he was kept. But that doesn't change the fact that nobody played great defensively this year. Maybe Wemby is right, but he got injured.
It was supposed to be Wemby, but because of the injury halfway through the season, someone else will get the DPOY. Jaren Jackson Jr. of the Memphis Grizzlies and Evan Mobley of the Cleveland Cavaliers were on the top spot after Wemby's injury, but now it is Draymond Green who is getting a lot of attraction, and he is actually the odds favorite to win it.
Still, I think the voters (sportscasters) will look at the standings of the teams, and I actually want Luguentz Dort to win this time. That dude is playing great on both ends of the floor and is actually one of the reasons why OKC Thunder is on the top spot. The difference will be on the rebounding section when it comes to stats since Draymond has moved in his average than Dort. Steals, on the other hand, are almost identical.