Why are ps3 exclusives sellig so badly compared to xbox360?

[FullMetalMerc]

ithis said:

Kantor said:
Halo is a huge franchise.
PS3 has a smaller install base
Microsoft advertises better
Some PS3s are just used as Blu-ray players.

Many Xbox360 owners pirate their games. - I think this can offset the above bolded reason no?

 

Honestly i havent met a 360 user who pirates games tho they are out there, they just arent a huge group like 10% of users, maybe they are like 1-2 % tops , 400k-800k users