Another thing to consider is discounting. Some games like Mario Kart sell close to full price for all their sales. Other games like LBP quickly fall in price. A sale at $50 for a $50 game two years after release is much more valuable than a sale at $20 for at $60 game 3 months after release.
Not all sales are created equal.
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.







