In the playoffs matchups and top players mean a heck of a lot more than how many games the teams won in the regular season.
Detroit, Atlanta, and Toronto are fine teams.
But if I'm a coach preparing a postseason game plan, I'd much prefer to figure out how to over come those perfectly fine teams lacking superstars. Because no matter how discombobulated the Rockets were, or how mediocre on defense the Blazers were, James Harden can win playoff games almost entirely on his own. Damian Lillard can become borderline unstoppable, even on the road.
I suspect the Spurs werent comforted much that they won so many more regular season games than the Thunder, much as the 2010 Cavs and Magic found little comfort in their regular season exploits when they were embarrassed by the Celtics.
The Cavs will get to the Finals without ever having the figure out how to deal with truly dominant individual opponents. And Lebron James will never have had to defend such a player, or face a single wing defender with anything resembling the tools required to slow him down one iota.
The Rockets are a terrible team outside of Harden (and maybe Howard). The other three starters are Ariza, Beverly, and Motiejunas. The rotation includes 38 year old Jason Terry, Michael Beasley, and Corey Brewer with a bit of Josh Smith and Clint Capela mixed in. Dwight and Beasley were the only other players at even 10 ppg against the Warriors. Ariza averaged over 10 shots a game yet scored only 6.6 ppg in the series. I don't care how good Harden is, that team is a terrible team.
The Pistons were 16-11 with Harris (and 17-11 after he joined the team). That 16-11 pace would have put them on at 48.5 wins over 82 games and they lost the first two games with him (without those that is over a 52 win pace and again doesn't include the final game in which Detroit won but Harris didn't play). And yeah, they don't have a mega scoring player like Harden, but all 5 starters were from 14.3 to 17.8 points a game in the Cavs series. Good solid team play and by far a better team than Houston (despite Harden).
And yeah Lillard is better than anyone on the Hawks, but I'd easily take Millsap, Horford, and Teague over McCollum. After that you probably have Korver, Bazemore, and maybe even Shroder over anyone else on the Blazers.
Basketball is a team game. Sure you need top level talent to win championships, but we aren't talking about championship level teams here. The Pistons are better than the Rockets and the Hawks are better than the Blazers. All of the metrics show this but aside from that all you have to do is watch the games to see this.