Good to see some Asian numbers, PSP is very popular here, but software is almost exclusively pirated. I'd imagine most of those 4 million software sales were bundled with hardware. At least PSP hardware should be profitable, so SCE Asia should still make a profit from PSP.
Shame they don't have regional breakdown for PS2 and PS3 too, PS2 is very popular aswell, but PS3 not so much. My guess for PS3 is probably only half a million or so. I've seen SCE Asia numbers for PS2 before, so will try to dig them up again.