I really guess that sony is trying to get around without a pricedrop in the us. With the weak dollar the ps3 is allready a lot cheaper in the us than in the eu as an example, so if they are still selling hardware at losses in parts of the world then the us is definitely a part of the world where they sell with losses. No idea if they still sell at losses, that depends on how much the production costs went down in the last months, in jan i heared that each ps3 costs about 400$ to make so then selling at 400$ was still a loss.
But i am definitely sure that Sony will watch sales, and if they see that the xbox pricecut is directly affecting their own sales they will act with some measures. But i don't think they will act if ps3 continues to sell at same rates and xbox gets a small boost, but they might also have plans for the case that the boost gets too big.
