Klay was still better in that Game 6 in 2016 WCF which was the single most crucial game in this whole Warrior run of dominance because of what happened later with Durant and all that... I forgot how ass he was in 2015 though. Curry was definetly more clutch in 2015, Klay in 2016, 2017 they weren't tested at all, this year I'd argue it's a tie
Regardless if you think he was better or not, Curry still had
equal importance/impact in that game - only three points separated their contributions in that second half (Curry carried them in the 3rd, Klay carried them in the 4th), not to mention Curry was running the offense as well (all Klay had to focus on was spotting up), and hit the dagger that put the game away.
And Game 7 was just as important (you know where you said he
might not do so hot in a pressure situation like a Game 7) - where he significantly outperformed Klay - in fact, he pretty much single-handily won them that the game on the offensive end:
Curry - 36 points on 24 shots (scored more points than the 2nd and 3rd option combined)
Klay - 21 points on 19 shots
Draymond - 11 points on 14 shots
Every other Warriors player was in single-digits.
Basically, Curry was the Warriors best performer over the course of those two elimination games.
Also, are you forgetting that Curry broke the overtime playoff scoring record in 2016 -
Basically, Curry has always been the more "clutch" player -