To be fair, without WB, that team is probably in the bottom of the barrel. But I agree, Durant IS the MVP of that team. There's no doubt a healthy Durant would at least have this team in the 5th seed. At least.
Actually, OKC has a higher net rating with Westbrook in and KD out than they do with Westbrook out and KD in.
With Westbrook and KD, they have a net rating of 9.3
With Westbrook and no KD, they have a net rating of 5.8
With KD and no Westbrook, they have a net rating of -0.2