Given that the PS3 and PSV were massively undertracked in the US, perhaps this was too? It might've sold ~200k which isn't that bad.
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right