How are the Cavs +1400 to win the title?

This seems absurd, the odds should be way lower. Boston is at +255, OKC +300, the Knicks are at +900 and my Nuggets, who have looked awful at times, are at +1300.

Cavs are 28-4 and have a 4.5 game lead in the East. Am I crazy or should these Cleveland odds be much lower? Is this the best future NBA bet on the board?