I can agree that poor self esteem can make someone a sore loser, but sensory problems are more likely to make for a short fuse than how they deal with that anger.

I have a very high self esteem. I am not the best loser of a game, but I will acknowledge a superior player and then learn from that player until I can beat them consistantly. I acknowledge a superior player by saying "Good Game" and shaking their hand or giving some other physical sign that they won.

I throw tantrums when the luck faery is kicking me when I am down. Due to this I hate playing games that are mostly luck, because my own whinning annoys me. Strategy games have a low luck factor and then it is my own lack of intelligence and manipulation that failed me, so that doesn't upset me as much. Even when SPD is lowering my skill level in a strategy to the level of luck, I get less irritated with a strategy game.

I have learned to "pause" games if I am confused or irrationally upset until the SPD trigger is gone.