Wow...I know someone that is crying right now (LuxDraconis) Robot Entertainment has issued the following:
An Xbox LIVE technical issue wiped all Halo Wars Xbox LIVE Leaderboards earlier today. This includes all singleplayer, multiplayer and Trueskill™ leaderboards, as well as all matchmaking data. At this time it’s unknown if the data can be restored, resulting in the Halo Wars Leaderboards being reset to original Launch Day status. The Xbox LIVE team is investigating the cause, and they will provide an update to the situation as soon as possible. We at Robot Entertainment apologize for the LIVE technical issue and any frustration players have experienced in having their statistics disappear from the Leaderboards.
What’s the situation? Stats have been reset? A bug? Retreat!