NEMA 1-15 or 5-15 with 220 or 230V isn't much better and for example done in Thailand... I own a Super Nintendo power supply and a Sony compact stereo system, both of which are 220V 50Hz and have a molded NEMA 1-15 plug (the power supply is a 220V/9V Ac wall wart).
Regarding accuracy: no, they aren't, not even Global Electron, but IIRC C-H actually tried to contact the relevant authorities in each country to confirm his list. This did not work in all cases, but the list is a lot more reliable than the others. BEsides, it has more information.
