The show always got described by Shonda Rhimes as "lighter and not as dramatic as Grey's". I found that the cases were pretty dramatic actually. The babies being switched (and the reason behind it) , the girls turning blue, the woman that bled whenever she was angry, etc. I just find that the show isn't as funny and lighthearted as the show's creators claim it to be. But whatever, I like it. Not as much as Grey's though. I don't care as much about the characters in PP as I do for the characters in GA. But overall, it's a good show.