The guy is conviently leaving out that these hardcore PSP games in at least two cases that I know of have other members of those franchises on DS.
Metal Slug Anthology(PSP), no mention of Metal Slug 7(DS).
Final Fantasy Tactics: The War of the Lions (PSP), no mention of Final Fantasy Tactics A2(DS).
That was enough to get me to stop reading.
Proud member of the Sonic Support Squad