It took an unlikely Celtics' shooting collapse at home for the Cavs to win this game. It was an upset. James really didn't affect the outcome at 35 pts. It was the Celtics' poor shooting that killed them. Especially Rozier, Brown and Smart. Though Smart contributed with his D. When you over rely on the 3P shot, it can help you, or kill you.
The Celtics should have made the finals. But it's clear that without Irving's veteran presence in the backcourt, this young team just wasn't up to the challenge this deep into the playoffs.