Is it ok that I skipped JustThatGamer's post? Because I'm just going to assume that he slagged Drake and plugged Kratos. Tell me if I'm wrong. Of course, that being said, I think he's right in that Kratos is a LOT more distinctive.
OT, I voted "nobody". A mascot isn't needed. It's not like Sony has a Mario-like character that they sprinkle around in a bunch of unrelated games. Sony's staple is variety, which kind of voids the idea of a mascot character.
I'd also argue that Xbox doesn't really have one, either. No one outside people who play Halo (or read forums) knows Master Chief. He looks kind of like a Generic Space Fighter Guy, which is propagated immensely by those really goofy GameStop commercials where it shows a bunch of them running around looking awkward.
