The only thing holding him back is lack of hardware. I say this as someone who loved Larry Bird while hating the Celtics teams he played on.
Will Durant be greater than Kareem, Russell, MJ, Magic, Wilt, Shaq, LeBron Hakeem, or Duncan? That's 9 players.
I know KD was the show last night, but I'd like to give props to Demare Carroll. Dude was playing defense, dcarroll was on durant like fly on stink, but it didn't matter.
KD is only in his 7th season. The next 10 will answer that question. He needs to stay healthy, continue producing and close the sale on some championships to crack that list. It's a very tall order but don't rule it out.