Well, the best I can say is I know Neil Gaiman wrote for Doctor Who, and while I'm not a fan of a lot of 11's material (partly because he was just TOO goofy and over the top early on, and then later he was poorly served by convoluted writing and the Three Musketeers of Boredom, Obliviousness, and Irritation, YES, Amy/Rory/River Song..."Vincent and the Doctor" was fun, as I like van Gogh, and his material with Clara WAS far, far better with a couple being very good, but this is already waaaay too much of a tangent) I CAN say I didn't mind Neil Gaiman's Doctor Who stuff.
So, yeah.
I'd "vote" Gaiman based on nothing literary and wholly because of that.
If you have a literary reputation reason to vote, I give you precedence, because deciding this on the basis of Doctor Who is, well, kind of unfair.
(After all, we ALL know the best Doctor Who writer on this lineup was Douglas Adams, for, among other great story decisions, giving us Lalla Ward as Romana...and also that Tom Baker's marrying and divorcing her is just proof that that was simply too much shared awesomeness for one marriage, and that Richard Dawkins' marrying Lalla Ward is just one more sign I was wrong to bash THAT doctor years ago...well played, Dawkins. Well played.)
:p