@OP,
I'm not sure who exactly you're referring to but the general wisdom is not that a game won't increase hardware sales for a couple of weeks but that it won't increase it for the long term. Anyone capable of basic reasoning and logic can work out that a popular game being launched will result in increased hardware sales, but very very few games actually cause a prolonged increase in hardware sales beyond 2-3 weeks.
I'm sure you could find a few crazy fanboys to point to, but for the most part people get it.








