Sony by a landslide :P Microsoft is entirely too predictable in they're endeavors.
I've always been a fan of Sony's quirky/unique taste in franchises ^^ They have a great knack for bringing some amazingly creative talent on board for they're published titles. I mean the heads of Sony funded God of War, which was an awesomely unique take on the Greek Mythology, and yet the funded Patapon :P
Sony games just take some amazing extremes as far as artistic differences, and I kinda dig that ^^
From 0 to KICKASS in .stupid seconds.