xbox 360 games are PAL (EUR), NTSC (USA) and NTSC-J (JAP)
Xbox Games in UK and Eur have the Region marked as PAL
and USA games have the region marked as NTSC
JAP games have marked as NTSC-J
3DS are also marked like this also
Play-Asia is a
store - not exactly an authority in technology now, is it? PAL, NTSC and SECAM are TV encoding systems, they're not regions, they never were regions. The fact that Europe happens to be using PAL encoding and the US happens to be using NTSC is completely irrelevant and coincidental. That said, 3DS'es, and any other handheld consoles that are not connectible to a TV for that matter, are NOT PAL nor NTSC. There is no arguing here, it's a fact, let it sink in.