It has been debated a few times with mixed results, but does the human sorcerer break into tier 1? The human sorcerer has 29 spells known over the 3.5 sorcerer (arcane can get another 3). That's a lot. So can the sorcerer get all the game-breaking spells in PF? 75 spells compared to 43 (63 to 34 if you discount cantrips) can't be readily ignored. PF's list of relevant spells is also smaller.