I looked at the odds and he was +650... That was a very generous odds if one were able to put a bet on him.
Giannis is no doubt a good player but compared to all other player like KD and LBJ, he is just a powerful forward that good on scoring by himself. The criteria of being an MVP doesn't suit him well on an All-star tournament. The odds simply shows how tough other players as contender for the title.