Winning close games is a lot about randomness. Luck.
Its about having a go-to play and go-to player.
We have Pierce and Ray, but the rest of our roster is capable of coming up in the clutch as well.
Miami has no go-to end of game plays, and all of their main players arent clutch. LeBron has hit 1 clutch shot in his entire career.
No, you're wrong. It's mostly about luck.
Last season Cleveland won the same % of close game as Boston and Miami actually won more. Toronto was actually one of the top teams in the NBA winning close games, won 63.2% of them.
There are cases of teams that in consecutive years, with basically the same roster and the same coach, go from being one of the best in winning close games to be one of the worst and then back to be good again. Has happened to the Spurs this past decade: they 11-9 in games decided by five points or fewer in 07/08, 8-11 in 06/07 (when they actually won the championship). The year before, San Antonio went 14-5.
It's mostly about luck. There's a correlation with how good the team is, with the team record, but over/under performance relatively to the expectations is randomness. Not "clutch players" or coaching.
See, this is where I think stats come up short. You can't honestly think that guys like Dirk, Melo, Ray, Billups etc. are clutch because they're lucky. You also can't honestly think that good coaching can't significantly aid the process. KG's open layup at the end of the Sixers game earlier this year had little to do with luck and a lot to do with good play-calling and good players.
The problem with stats in scenarios like this one is that they have absolutely no ability to assess the psychological aspect of the game. Certain players play well in crunch time - they tune the pressure out, or it might even help them focus.
Others press. They start trying too hard, playing out of control. Maybe a string of bad outcomes gets in their head (which I think is what is going on with Miami now). There are plenty of reasons why some players have a knack for stepping up in crunch time, while others fade. Luck is one of them, especially over a small sample size, but it's only part of the story.