Halo 4 was not in MLG because they said it was "too random". Apparently its a casual game where you unlock items giving you the illusion that you are gaining skill when yet you are just getting a better advantage.
I _apprehend_ Halo 2/3 had games where each team starts out even. You had to actually gain skill to get a higher skill level. Gaining skill takes ambition and effort; those properties belong to a lower demographic and thus a smaller market.
Can't wait for you until you get buried M$.