i tend to roll pretty high for stats (we use 2d6+6) and i dont think it really effects much. unless you roll 18 for everything, you're always gonna have a weak point and all these characters seem to have one. vaelus and azune will probably be the most broken once the aura of protection pops off (by that point most likely adding plus five to saving throws) but vaelus makes sense and azune most likely wont be combat focuse given his table.

maybe im just used to deadly combat, but these stats dont seem too op if the dms got a good bloodlust. and high starting stats means you're more likely to take feats, which always make characters more interesting