If you look at the better selling games during the late PS2 era, a lot of them were casual and sports games. It's the people who don't care about graphics that are willing to buy an outdated console for less money. The PS3 doesn't have that audience. The PS2 was somewhat fortunate to get have Guitar Hero, Rock Band, Fifa and Madden to keep it rolling.
At this point, I don't see the PS3 gaining in the casual games, so they will probably never get those sales. The PS3 doesn't have a lock on the sports games like the PS2 did, so that won't be a driver of sales either.
Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.
