With the first episode of Powers I wasn't really sure what to think. It was good, but it seemed fairly obvious that the budget probably wasn't all that big and it has a different direction than the other superhero TV shows, yet I couldn't put my finger on it until about the third episode when it really take offs into being one of the best, if not the best of the superhero shows. First is that it's a real ongoing story, and it's solid, where everything that happens actually matters. People die, characters have both good and evil aspects, and everyone has a real back story that affects the big picture. BUT what probably works better than anything else in Powers is that the characters have complex relationships with each other that seem fairly realistic, or at least genuine in their motivations towards each other with invested interests so that the action carries a lot of weight. Show like Gotham, Arrow, and even Daredevil don't reach this level of effectiveness in their characterization.
One thing I would note is that this probably isn't for kids. There are a lot of F bombs, and though it doesn't really have sex, there are a few discussion about people using sex as a way to get what they want. Just FYI.