This is only big news for the people that were counting the millions until PS3 caught up with the 360. I don't think you can realistically look at one week and pinpoint a trend.
Watch, let me reverse it.
"Everyone who was going to buy a PS3 in Japan due to the price change has already done so, so I guess we're done watching the system catch up to 2nd place"
Disagreements in.. 3...2...1..