I don't think they would beat Cleveland or Chicago. Westbrook is as talented as anybody in the NBA, but I would just way rather have Wall be my point guard. He's just as big and athletic for the PG position as Russ but he actually plays like a PG. Russ needs someone like KD to reign him in and take shots away from him or he tries to do it all himself like you saw this year. Wall is infinitely better at keeping his team involved.
Maybe when Russ matures he'll evolve into that guy that can dominate solo like you see he should be able to, but as of now he's not there but plays like he is.