I don't think anyone said they didn't...? You still need level 7 to benefit at maximum from auras, unless you're vengeance or devotion. Vengeance flat out doesn't have an improved aura there while devotion's immunity to charm is so situational it's not really worth picking. That's just how pals are hardwired, they gain their important class benefits at levels 2, 6, 7, and 11. 2: smite, 6: aura, 7: improved aura (minus vengeance), 11: improved smiting.
