i think that overall, Marvel has better Authors. Like, across the board, their average would be a 7
While, DC has a range of authors, some like Scott Snyder or Geoff Johns would be very high such as a 9, but they also have some not good authors.
Overall Marvel wins, but DC has certein better authors
For me...Dc has two main guys Snyder and Azzaerello. They are losing Morrison, and not much else afterwards. Marvel has a solid core, Hickman, Fraction, Slott, Bendis and a nice group of up and comers. Bunn, Hopeless, etc...I would say Marvel now (no pun intended) with Image a close second.
I am going to go with Marvel on this one. DC has many talented writers but there is just to much inconsistency with some writers being top of the class but I feel there is less in the middle ground and a lot at the bottom. Were Marvel has more middle ground writers mixed in with there top writers.