Because Halo 3 would sell better if it was mutiplatform, same goes for Killzone 2 and metal gear solid 4.

Hardly, way to completely miss the point, I never claimed Halo 3 was bigger in Others than GT. Maybe you should reread before trying to own.

Oh really? So tell me, if it were multiplatform, who would publish it? It sure wouldn't be Microsoft, who threw down the biggest advertising campaign ever on that title. So less advertising=selling more.

I know but that was a bigger difference than I thought!

@ Goonydude

I'm still not seeing how CoD being multiplatform disqualifies it.

I'm assuming we aren't counting the Prologue titles then?

It should not  disqualify it. the fact is that CoD4 has a bigger fan base then Halo 3...but the point i think is that CoD4 does not hurt Halo 3 as much as it hurts FPS tittle on PS3

Im assuming were only talking about full games not a demo

But this is a fight between one exclusive and another, not a multiplatform and exclusive.

Halo is more popular for the simple fact that its a big franchise with an actual character.

 A person that knows bare minimum in gaming would probably have a higher chance of knowing the halo series compared to the GT series because of MC.

I just asked my sister, who is a casual gamer (...barely, but I'd put her in the category of someone who knows a "bare minimum" about video games) about Master Chief, and her response was "who the hell is that?"

Halo is obviously very popular, but I don't think MC has been around long enough to be an iconic character compared to the likes of, say, Solid Snake or Lara Croft. Maybe in five years.

That said, I'm not sure the average [American] person would be aware of GT, either (though if you asked them to name one racing game, GT would probably be the franchise mentioned).