We don't need to compare them now to comparing them with Durant. We need to compare them now with pre-Durant GSW. What's Livingston now vs. pre-Durant? What's Iggy now vs. pre-Durant? Bogut was a huge part of their success, too.
You had young and healthy Klay, Steph, and Green, plus having Barnes, Livingston, Iggy, and Bogut. Now you have none of the latter guys, a 32 year old Steph, a (how motivated?) Green, and a Klay who, even if healthy, is a question mark as to how much he is of himself. They're a decent team. They're not a dangerous team.
The Warriors also had surprisingly rugged interior play with guys like David West, Javale McGee one year, and even Festus Ezeli. Plus they had Harrison Barnes to fill out their death lineup before they picked up KD. Now they're going to be playing their rookies and jourenymen like Glenn Robinson III and Alfonzo McKinnie at forward.