Who actually believes that GT series IS more popular than Halo series.

[boxydancer]

You're quite persistent about this, aren't you OP?

In any case, it's hard to tell as of now, because GT5 hasn't been released. If I had to guess though, in the end, we'll see that GT is more popular overall, as it enjoys more popularity in Japan and PAL. Halo is more of an American phenomenon.