One is most "valuable" player, so all in all we need to remove the players from the teams and see how they are, if you remove harden from Houston they are not a good team, they can't probably make the playoffs, they have tucker and Capela and of course Chris Paul but its still a 9th or even 10th team on western conference, doubtful if they are ever a tanking team looking for a high pick but that is possible.
Hence, most "valuable" is basically Giannis. Plus, harden is hated by media for his horrible fake moves that is basically trying to get fouls all game and looking to travel on his shots and all that, people want to see a semi-god like Giannis bullying people into a dunk not harden fake fouling himself for a call to get an and-one.
Now that the Bucks has this phenomenal player, they deserves to be on top. Anyways, any team that has no superstar is just like a food for the wolves in the jungle. Giannis is a superstar which can carry his team to the top but I guess he will fluke during the playoffs due to his lack on experience about how tough it is during that phase of the tournament.