You left out that Durant was also 11-15 from the line, had 8 reb, 6 ast, 2 BLK and scored 21 points for a GmSc of 7.7 in that game which was five and a half years ago. He's won two Finals MVPs since.
Steph Curry's last must win playoff game without Durant, Game 7 of the 2015-16 NBA Finals against CLE: 6-19, 4-14 3FG, 17 points, 4 TOV, GmSc = 5.1. So, Steph's last must win playoff game without KD was more recent (June 19, 2016), more important (Game 7 of the NBA Finals) and worse than KD's last must win playoff game (Second Round, Game 5, May 15, 2013) without Curry or Westbrook.
Aren't 1 game sample sizes fun?
BNM