I'm not aware of any other thread... Thanks for all the extra details. So, here's the full problem then.
You host games and get briefly disconnected from the internet when you have a loss of power or a short to your modem. This causes all players to disconnect from you, the host. They see you as having left the game, but are still connected to each other, but are now unable to report their stats as they are apparently routed through the host (you). Some timeout setting is low enough that you everyone disconnects from you, but another timeout appears to keep your connection alive after your modem cycles back on (after the 10-15 seconds you mentioned). Then, you are able to complete the game and receive a win stat if you are able to win, or you'd get a loss if you were unable to do so. Everyone else in the game gets a loss because the your connection indicates that they all disconnected or that they quit the game.
I think that about wraps it up. An obvious solution so this wouldn't happen with you in the future would be to not host games, as you appear to have some extra circumstances that might lead your connection to be unreliable as a host. But that said, that's your call and no flames here regarding that. So long as I care about stats (which is alot less now as your issue looks like it would be incredibly easy to duplicate), I'll stear clear of any games that you host. Not that you'd be all that interested in playing with me.
But, I do appreciate your jumping on the forums and clarifying this. Thank you, Sylis.