Have to throw in another couple of pennies here. Focused Practitioners are an incomplete education, however, I think it's just as valid to say that while sanctaphax's fire specialist wizard was stronger than the pyromancer, the point is, he was only a LITTLE stronger. True he can do other stuff, but to me, the point is that the focused practioner is strong ENOUGH to hang with the wizard and essentially, strong enough to play the game on a submerged level. Who's stronger? Well, really, at a certain point it comes down to the cleverness of the player. The focused practioner is strong enough, and, really, as a player, that's all that matters, that your character can hang with the gang and isn't all "interesting character fluff" but is a ripped up character sheet after one rush of kobolds.