But you forget that major newsites everywhere are hyping up GT5 in the same way Halo is hyped up in major news outlets.
I am sure this will make a splash. Resistance, Killzone, Infamous are good but they did not have the hype of major news outlets.
Infamous got a bit of major news outlets hype and it is a GOOD game. So even without the major marketing, GT5 is going to push huge numbers.
All the major Halo titles including reach have major support from the major outlets