Gta4 above Star ocean 4 in Japan.

[TWRoO]

What Killerman said... GTA4 will very likely sell more if SO4 is on X360 only.

But also what Xen said, in that the "most wanted" bit of Famitsu only seems to represent the "hardest" of core fans... X360 games get into the top 10 often, but never do so in sales.