Which will sell more?
http://teckdaily.blogspot.ca/2012/05/halo-4-vs-black-ops-sales-war.html

halo is exclusive. It might sell more on xbox but there is no way it can outsell bo2 on the whole.

Ya I know, that's the problem.

idk BO's was fairly overrated and was easily shovelled under the table by mw2 1/2 and gears np, w/ the footage you can clearly see the map is a "narrows" remake so the h3 nuts who got shortchanged by reach may come back out.

for total sales i would say BO's wins all platforms total sales, but halo4 will dominate the xbox platform, just for the simple fact i have avid COD players i work w/ and they saw halo 4 and saw BO2 and they are more interested in the Halo 4 lol