Japanese sales for the week ending May 4th are in, and PSP remains some distance ahead - With an amazing 100,000 consoles sold (Monster Hunter shifted 102,000 units this week) the PSP was 30,000 ahead of its nearest competitor the Wii, which had a large increase itself. Perhaps more significantly, it was close to twice the number of DSes sold this week. Amazing. This can't all be down to one game, can it?