How old are you and how long have you been following the NBA? Unless you just started following the NBA last year you should no by now that having the best record in the NBA means nothing other than seeding come playoff time. Come playoff time its all about match ups. In a 7 game series against another good team you will get exposed. The Cavs got exposed yet again this past season. They can have all the meaningless regular season wins they want but when it comes down to it, it is the same story as it has always been. Lebron has to score 40 for them to win. If not they lose. That is what it was. Nothing changed in the 7 years lebron was there. He realized this and wanted out. Even Boston was saying it during their series just flat out shitting on Lebron's teammates. They straight up said one guy is not going to beat us I don't care who it is. Lebron can score all the points he wants he isn't going to beat us by himself. Just challenging Lebron's teammates to do something about it. And guess what they still sat around and said "ok Lebron please score 50 tonight so we can win."
So no the Cavs had no shot at winning the tittle. They were at the end of the day a one man team and that means no championship for you.