I guess I'm in the minority.I won't buy a game unless I try it first,which means GOW will be a rental for me. And once I have a copy to play through fully,what are the odd's I will buy the the game only to play it again. IF the game has great replay value I will though.
But you are correct, the magority of people fall for marketing and don't make wise decisions with their money when it comes to buying games.
Even on the 360, the magority of players are not playing multiplayer, so the magority of players are buying the game for the single player,whereas they could simply rent it for a fraction of the cost and get the same experience. Just because a magority of people do something, doesn't automatically make it the wise thing to do.