Curry didn't play a couple of nights ago v Atlanta, which is a good team, Klay Thompson had a pretty shit night shooting the ball, and the Warriors still found a way to win. Playing OKC, Curry had a poor night shooting the ball, by his own ridiculous standards, he still finished with 33 points, and the Warriors were in the end pretty comfortable winners by 15.
I have to say, as great a players as Westbrook and Durant are, they don't do very well closing out when it really matters. In a year Kevin Durant becomes a free agent though; it will be very interesting to see what will happen there. If he stays at OKC, they will continue to be contenders, but if he moves I reckon whichever team he joins will be favorites to win it.