Why Phantasy Star Zero did not sell as well as Phantasy Star Portable?

[chriscox1121]

christmas sales have boosted this game quite a bit recently. I think it would be awesome if we could get a Wii anniversary edition that had episode 0,12,4 or at least 1,2 and 4. Although, i would that probably wouldn't be good in the sense of me having no life at all.