Opening week: Can WKS beat out Microsoft's big 3 JRPGs of 08 (Japan) ?

[Majin-Tenshinhan]

No.

Not that this means it'll do badly, but note that this game isn't even on the Famitsu top 15 most wanted games. To be honest, I'll be surprised even if it does 100k it's first week, at this point. Things will be easier to tell when we get closer to release, though.