Reality wise, I've been gaming since 1975 and I've never suspected nor seen a hint of loaded dice. I play 99.9% of my games with friends and for the life of me cannot remember a week later if I won or lost, just whether it was fun.
We're playing with toy spaceships - if it isn't fun for the sake of having fun and winning is so important someone feels the need to cheat, more power to them. Odds are great that anyone with that big a personality disorder probably isn't anyone that you want to play with on a regular basis anyway and if winning a toy spaceship tournament is that important, good on them. It probably keeps them from molesting squirrels while train spotting.