I have to go with Spin-offs simply because it has Final Fantasy Tactics and that along with some other relatively fun spin-off games is enough to trump the other categories, although the NES/SNES category comes in second.
Early FF Series NES/SNES era(FF I, II, III, IV, V, VI)
Late FF Series Playstation/Playstation 2 era(FF VII, VIII, IX, X, X-2, XI)
Spinoffs (Chocobo's Dungeon 2, FF Tactics, Tactics Advance, Crystal Chronicles, Mystic Quest