But with respect to (positive) PR you always have the problem that the nay sayers are way louder and more active than the yay sayers, at least in my experience while observing gaming forums! I guess that this applies to nearly every game out there. For instance, look at the Last of Us PAX thread at Neogaf...people go crazy seeing the off screen footage about the gameplay...without actually playing the game, creating a super negative perception of the actual game.
Keep your game under disclosure as long as possible, a la GTA, to maximize curiousity of people and to maximize sales. In my opinion this is the right way to go, although as a gamer...I always prefer having a demo
It's not so much about convincing the nay sayers, but rather just showing your game to the widest possible audience, not just the dedicated gamers who keep track of everything over the internet.
I haven't really been following TLoU, but I think it will do well regardless of what negativety may be surrounding it right now, simply because it's an exclusive from a capable developer, and it'll likely get more advertising then Fuse will. Look at Tomb Raider, that had a lot negativety surrounding it. Yet it still sold well.
GTA is a special case. It's name alone is strong enough to get people excited. That work won't for a new IP. Although Insomniac should have never unveiled Fuse as Overstrike. They should have waited until they had a much clearer vision of what the game was going to be.