I can't help but imagine this schedule of JRPGs for the PS3 in Japan this year:
September - Eternal Sonata
October - Cross Edge
November - WKC
December - FFXIII
That would definitely be enough to combat ToV, IU and Last Remnant on the 360, but would it be enough to get the PS3 selling at decent levels? I think if Sony is able add SE BC, then yes it would be enough.