Either way, wouldn't Nintendo hold the record?
When a press release uses an arbitrary metric, then it's quite safe to assume that it isn't an overall record. Nintendo of America has done the same thing to celebrate Switch as a #1 console.
Actually it seems that's new record for any Nintendo system, previous record was held buy Wii.
See the response above. Nintendo of America excluded Nintendo handhelds to celebrate Switch as #1.
I don't know which consoles have Switch beaten in Germany. Could be Nintendo handhelds, PlayStation home consoles or even both.