On defense, it's not even close. Golden State is elite, Cleveland is bad.
However, Cleveland hammers Curry off the ball-
https://twitter.com/jaeazizi/status/868181575883608064
Which is a very smart strategy, off the ball fouls just don't get called in the playoffs. There is a simple solution, though. Pick and roll with Curry, arguably the best pick and roll player in the league.
Kerr is allergic to the pick and roll, though. He takes pride in the fact that the Warriors run it less than any team in the NBA.