FFXIII first week sales will outsell Halo 3 first week sales, worldwide.

[Dolla Dolla]

Both Halo 2 and Halo 3 have also beaten the last Final Fantasy game in sales. Final Fantasy is on a decline, saleswise. By the time it hits the market, Halo 3 will have sold close to, if not more than, 7 million copies, and I have doubts about FFXIII getting that high.

Thinking Halo will outsell Final Fantasy does not make me an Xbox fanboy, btw. I have plenty of love for Sony, just a differing opinion from yours on the selling power of FF currently.