So even if you score an 8 overall, you still have to play more games than the top 4 competitors to earn a spot at the tournament??
Here is the tiebreaker information. You can read more about those details here:
http://blogs.halowaypoint.com/Headlines/post/2013/07/10/The-Halo-Bulletin-71013.aspx
In the event that two players are tied with the same average at the end of the week (or at any point during the week), the leaderboard will automatically use the following tie breakers to determine each player’s rank:
• Most games played
• Most first-place finishes
• Most kills
• Fewest deaths
• Most assists
• Fewest quits
• Earliest date and time of first qualifying game played
• Earliest date and time of tournament registration