How long will the increased sales of the ps3 last?

[Snake612]

This week the PS3 did tremendously in sales. Obviously because of the worldwide release of Metal Gear Solid 4. PS3 was able to outsell the wii this week by a small margin. This would be the first time ps3 outsell the wii in the 7th generation. With news of the ps3 going to outsell the 360 in june and july, How long will the increased sales of the ps3 last. In my opinion I believe it will last a month.