Emphasis on "panic".
Although Nintendo did cross a milestone with hardware, May was a historically weak month overall for the company in US stores.
Nintendo announced with the sales results that the 3DS family of systems (including 2DS, which had a price drop this month) had crossed 60 million units sold. However, estimates for the system had one of its lowest US months ever with a reported 72,000 units, and the Wii U had its worst month of hardware sales ever in the United States at approximately 28,000 units.
On the software front, the Nintendo Selects version of The Legend of Zelda: Ocarina of Time 3D was in the top 25 individual SKUs during the month, with no mention of the performance of the month's only retail release Disney Art Academy. In the top 10, future Wii U retail release Minecraft landed at #5 in the combined format top 10.