Harden 18 of 48 overall (.375) and 7 of 22 from 3 (.318).
So, you may say to yourself, "Well, those were not HORRIBLE stats..."
Since history may forget and look just at the overall stats, I think it bears noting here that Harden had 3 threes and a dunk in the 4th quarter of Game 5. During that stretch, his team went from being down 26 to ending up down 20 - in other words, garbage time.
If you remove those 4 makes, you get 14 of 44 (31.8% shooting) and 4 of 19 from 3 (21% from 3).
So, when it mattered, Harden put up shooting percentages that not even the WORST NBA players (Shawne Williams, Wes Johnson) were able to "achieve" during the season. And when he realized that the game and series were over, he padded his stats in meaningless garbage time.
Great series, James Harden - shave the beard as a punishment.