I think that few would disagree with you. Without Kyrie and Hayward, we would be a 500 team.
But then again, without Harden and Paul so would the Rockets. Without Aldridge and Leonard, so would the Spurs. Without Lowry and DeRozan, so would the Raptors. Without Curry and Durant, so would the Warriors.
Take away the best two players from any other team, and they are below 500.
The testament to this team is what they have been able to do as they play through injuries to different players, as a young team, with a completely overhauled roster.