Sabin is actually one of the games weakest characters when you get down to it.

Any Blitz from Aura Bolt and beyond run of Sabin's weakest stat, magic, not his strength. Pair that with his horrid equpment selection, and then there are so many characters more effective then he. Especially Ceres and Terra with their Minerva Bustier.

Still use Sabin though, cause he's the man.