Because there aren't tons of these on the Wii, I've enjoyed every Atlus game I've owned, and the concept was interesting. Seemed like a sure thing to me.
As someone that never owned the PS2, I was screened from most of Japan's low-quality RPGs; for a Japanese RPG to make it all the way to the West, it usually had to be quite good. The last time I owned a console that was a haven for RPGs, it was the SNES, and back then even the bad RPGs were pretty good.