For there to be One winner in a game there have to be 99 losers when you are talking about a 100 player map, or 95 losers if you figure on a coalition win. There are many players who simply hope to join a winning coalition and are clueless about how the game is played. This does not mean that they are cheating or are multiple accounts of other players.
If you have ACTUAL evidence I have given you instructions on how to make a report that will be investigated. Reporting like this on the forum will not result in any investigation.