Disagree. Rubio has been terrible this year on defense. When Exum plays with the starters our team defense is elite. Our main lineup is Rubio, Mitchell, Inlges, Crowder, Gobert. They play together more than any other lineup. They put up a team defense rating of 99 which is really good. When you swap Exum in for Rubio our defensive rating goes to 75, which is beyond elite.
Individual defense helps the team quite a bit. Look at Gobert, he changes things a lot individually which allows others to be more aggressive and stay home. Rubio cant stay in front of his man to save his life. The team has to compensate for that a lot. It puts Gobert in a bad position all the time.