I really don't see how the price of a game is any good of an indication, Blops is one of the biggest games in US and has dropped in price dramatically by now, down to $40 on Amazon, LBP2 is at the same price as GT5 right now. Brotherhood at 44. Just Dance at $30. I don't think the price is any good of an indication as to how well a game will perform in the future or is performing at the present.
People are more likely to buy cheaper games. I never said Forza 3 bombed or the only reason it sold that much is because it was U$40 bucks 2 weeks after release, I just simply stated that it was U$40 bucks 2 weeks after release.
Let me try putting it to you another way, I actually wanna buy Portal 2 and I'd prefer to get the PS3 version because of Steam, but I'm not willing to pay U$60 for it, but for U$40 I'd get it, so if the 360 version of the game is U$40 2 weeks from release while the PS3 version is still U$60, I'll grab the 360 version and not even think twice about it.
Also, anyone that's smart enough will buy all Ass Creed, Bioshocks, Dead Spaces and Mass Effects at U$20 because they ALL got there within 1 year of release.