Captured Win-Loss ranking

This rating adds up the wins of teams that a team beats and the losses that a team loses to. Hence it 'captures' wins and losses. The formula is

rating = (Total captured wins – Total captured losses) / # games.

The more games a team plays, especially a winning team, the more captured wins there are, so I divide the win-loss difference by the number of games to normalize the rating. I suppose one could quibble that the opponents also need to be normalized.