Also a lot of the spells are AoE effects and all of these calculations are for a boss, ie single target. A group of mobs will make the dps go up considerably.
Also many of these spells are ranged which is a huge boost. While the barb is still running towards the target you can hit him with 3 spells before the melee even gets there. Another large factor.
Still, the savant pre should probably be boosted a bit but these numbers are probably starting to get right about where the devs want them.
V