Many of the BHL members were deranked and disappeared from the leaderboards, after the latest patch.
Be sure that you have disabled the tracking system of the battlelog if you wanna still use the nemesis boost method, its easy, click edit profile on battlelog and uncheck the Save game events and activity to Battle feed (visible for everyone) under the Privacy Settings
Very good post but it looks like it took you forever to boost all the way up to that level! At the end of the game it said the game lasted 31 hours! At the end you probably wanted to kill yourself