I believe the cap is set @ 100,000 per 24Hours and if you divide that by say the average 3,000 you make ever game for winning… lets see here how many games is that?
33.3 Games… Every game usually lasts from around 10 minutes to 15 minutes, here lets do a little math.
33.3 games @ 10 Minutes a Game is 5.5 hours of Gametime you get each day to play Halo 4 and level up the natural way.
How does this go over for people who have multiple people playing under 1 account?
Or for the people who use double Xp, here lets do a little math!
33.3 Games @ 10 minutes a game, is 5.5 hours… lets divide that by 2 and see how much game time us double xp user actually get in a day,
We get 2 hours and 45 Minutes of Gameplay on Double XP Every Match, per Day… on the Week Halo 4 Launches, Promoting Double XP on Chips and Pop!
Not to mention the Challenges you complete will lessen the time you get to play, here take a look at my argument…
Monthly Challenge, 117 Wins in War Games… Ok and your gna give me 17,000 some odd points… alright so by my calculation if I were to complete this commendation and there being a 100,000 level cap for that day, that is
83,000 Points left to gain that Day after completing this challenge, so lets see how many game hours that is…
27.6 Games left, Lets give it 28 to be nice… @ 3,000 xp per match… thats
4.6 hours of gameplay you’ll receive Xp that day.
2.3 Hours on Double XP.
I think the math solves the Problem for you 343…
now give us what we paid for,
Please 
DFK Dopey- A “Bungie Halo” lover.