Why are ps3 exclusives sellig so badly compared to xbox360?

[Coronalex]

Zedex said:

Looking at the top sellers from ps3 and comparing it with xbox 360 it is clear that ps3 exclusives DO NOT sell that well (compared to xbox exclusives) Here are a few examples:

Uncharted-3.10                                                                                       Gears of war- 6.04mil

Uncharted2-3.13                                                                                     Gears of war 2- 5.66 mil

Killzone2- 2.25                                                                                         Halo 3- 10.93 mil

Resistance-3.68

Resistance 2- 1.85

Halo 3 sold more than Killzone 2, Resistance and Resistance2 put together!!! Why is this? 

No mention of

GT5P 3.67m

MGS4 4.68m

LBP 3.21

??????????????

 

But still a good point, people bought a 360 for the purpose of new Halo(s)