It's good that you bring up the free throws. The reason you can see why the Harden "choking" or being worse in the playoffs narrative is false, is by looking at the FT%. It's actually slightly higher in the playoffs.
FTs are all about dealing with pressure and yet are always the same basic shot. It's the one thing that is perfectly insulated from differences in defensive schemes they throw at you vs in the regular season, roster strength, matchups, injuries, coaches' decisions, referee f*ckery etc. Harden is overall better at the line in the playoffs. It's not the pressure that has kept him from winning it. It's all those other factors.
Yes he deserves criticism for the turnovers in crucial games and not shooting enough when needed. But that's never been the whole story.
lol
Free throws have nothing to do with making on-the-spot decisions in actual gameplay. Someone can be wonderful at pressure decisions and still brick their free throws under pressure. Someone make all their free throws and still be terrible at pressure decisions. They're completely different situations.
If Harden were simply worse in the playoffs, your argument would have merit. But he's very specifically worse in the biggest games in the playoffs. He has put up some of the worst Games 4-7 in NBA postseason history, especially when the series is on the line. Why aren't his Games 1-3 equally bad?
Truth is, outside of maybe Bron and Kawhi, he's put up more resistance against the all-time GSW dynasty at their peak than any other player. Cards just didn't fall right for him.
Huh? Harden's history against the Warriors is nothing to brag about
2015: A 5-game loss that ended in one of the worst performances in NBA postseason history (shot 2-11 including 0-3 from 3pt, 12 turnovers, 5 fouls)
2016: Another 5-game loss
2017: Didn't face this squad, the actual peak of the Warriors, because he was getting blown out by the Spurs with no Kawhi in an all-time humiliating performance
2018: The one 7-game series you're remembering. The rest of the squad (due to stellar defense, some timely three-point shooting, and CP3's leadership) had far more to do with this than Harden did. Once CP3 was out, Houston lost the next two games by double digits.
2019: 6-game loss despite Durant not even playing in Game 6