They said it themselves....
Finish Japanese PS3 version on PC and Optimize for PS3.
Release JPN version and Localize PS3 version for NA/EU.
Hold localized PS3 version back and port Localized PS3 version to 360.
Release PS3 and 360 versions in NA/EU simo.
The game will come later than it would have, but we will never know how big of a difference it makes.
4 ≈ One