For comparison's sake, let's see the DS DQM games and the original game:
Dragon Quest Monsters: Terry's 3D Wonderland - 513,183
Dragon Quest Monsters: Joker - 627,022/1,490,829
Joker 2 - 645,582/1,240,045
Joker 2: Professional - 169,251/614,708
Dragon Quest Monsters - 401,497/2,336,425
Having all that typed, I have to say, I thought Terry's 3D Wonderland would've done less but it should be a million seller at least.
Dragon's Dogma is holding on nicely, the 360 version even making a rare second week appearance for the platform. The three 3DS titles are still up along with Kid Icarus: Uprising and Fire Emblem: Awakening, the latter now over 400K.
As for the PSV in Japan, honestly, I'm a little surprised that Namco-Bandai and Sega aren't fully taking advantage of no Monster Hunter. God Eater and the Phantasy Star Portable games were the best selling MH style games. I'm seeing a missed opportunity on their part.