By the way Tales of Vesperia DOESN'T have the exclusive stamp either, see:

Eternal Sonata didn't have it either:

Sooo... Star Ocean IV is officially "timed exclusive".
While the Infinite Undiscovery, we all know its exclusive, does have the stamp on the promotional material:

PLAYSTATION®3 is the future.....NOW.......B_E_L_I_E_V_E
Supporter of PlayStation and Nintendo







