I suppose the answer to that depends upon how cynical you are. The "Gods", as they are currently called, were merely the most powerful and adept at magic. Yes, they're worshipped as gods, and yes, they're immortal as gods, but... does simply having power and ability make one competent and benevolent leader automatically? I don't believe so, but... well, I'm used to being heretical.
The notion of God Kings are where the noble houses came from. My own - D'Lorus - descended from a specific God King in charge of knowledge and books. I don't think it matters much; actions matter. But others might disagree.