Well, this was extremely interesting... thanks for posting!
By my calculation, Vita undertracked by ~ 2500 for June (give or take a bit because the dates don't quite line up); Wii-U overtracked by ~ 1500. Not really fussed about calculating it for the other consoles. Yet they're both overtracked overall, so we must have some months way off.
It's interesting, though, how poorly Wii-U did in June. I'm guessing there were no new releases? I suppose it made up the rest of it's sales for the first 6 months from stronger sales in the other months, because it's sold more than Vita overall. ~ 8k is actually an above average month for Vita based on 34k over 6 months; wonder what released which caught their interest.
Anyway, onto the bulk of it, but great June for 3DS; and great 6 month sales from PS3.







