Bravely Default is having good legs, it shouldn't have any trouble reaching over 300,000 units at retail. On the contrary, Lightning Returns: Final Fantasy XIII collapsed quickly, just 41,000 extra units in the last 3 months.
Launch month:
[3DS] Bravely Default (Nintendo) {02/07/14} - 160,000
[PS3 - 360] Lightning Returns: Final Fantasy XIII (Square Enix) {02/11/14} - 165,000
[PS3 - PSV] Final Fantasy X/X-2 HD Remaster (Square Enix) {03/18/14} - 260,000
LTD sales as of May 31, 2014:
[3DS] Bravely Default (Nintendo) {02/07/14} - 258,000 (+ 98,000, 3 months)
[PS3 - 360] Lightning Returns: Final Fantasy XIII (Square Enix) {02/11/14} - 206,000 (+ 41,000, 3 months)
[PS3 - PSV] Final Fantasy X/X-2 HD Remaster (Square Enix) {03/18/14} - 334,000 (+ 74,000, 2 months)
Is it possible to do the same for other games with updated LTD? South Park seems to have slowed down heavily since its release, IIRC.