When EA was contacted about FIFA 12 being largely repackaged as FIFA 13 for Wii, here's what a rep had to say.
FIFA 13 has “the same great gameplay” and EA “felt it was important to continue to offer fans the opportunity to play an authentic football experience on Wii.”
In other words, they just dodged the question. Perhaps a statement from Peter Moore is more telling of the situation.
“Year on year, Wii has just dropped, and clearly we don’t make games for it anymore.”
They don't make new games...they just repackage and repurpose old games, then pretend they are new.