Well, hopefully now we can stop this exaggerated nonsense about Rozier making Smart unnecessary. He's just as inconsistent as ever.
Well, at least Smart is consistent. He's worse than bad Rozier offensively every game
The Celtics are only 0.9 points worse per 100 possessions offensively when Smart is on the floor.
When Rozier is on the floor, the offense is 6.8 points worse.
There is more to offense than just shooting percentages.
Those numbers could be indicative of a lot of things, including who each player shares the court with more often.
My initial guess would be Smart spends more time on the court with Kyrie than Rozier does.
EDIT: Yep, a quick check at NBA.com shows Smart plays 18 mpg with Kyrie, while Rozier only plays 9 mpg with Kyrie.