It already fell out of the weekly top ten in Famitsu...
7500 is a high bar for a game 6 weeks after launch and isn't a Nintendo evergreen. A 21% drop from last week is enough to fall out of the chart at this point. And with Fire Emblem, Rune Factory 4 and Fishing Spirits, Nintendo players had tons of new stuff to play on this week. But that doesn't mean it can't sell 3000-5000 a week where it's predecessors would drop out of the top 30 pretty fast.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454