My explanation. Think Kris was steamed? I think Dion was more upset.
Both Kris and Dion are gone to the NBA after this season. Their resumes are worth big bucks. Dion is the star on this team, so why was Kris on the floor 50% longer (10 mins more) last night? Think Dion was oblivious to this stat?
Had Dion made that pass and Kris and he scored (a pretty sure thing), Kris would have been the game leading scorer and would have moved ahead of Dion. As it was, even being 10 mins less on the floor, Dion was the top SU scorer last night and holds an 8-7 lead over Kris for top scorer on the team.
The game was sealed when that pass could have been made. Why would Dion deny himself the title of leading scorer on the top team in America? He made a smart decision for himself, even if not a brotherly one.