Switch is a successor to the Vita and 3ds.

[Nogamez]

Dr.Vita said:

More like a successor to Wii U and 3DS and not Vita and 3DS.

I don't know never played Vita, seems like a fairly powerful handheld capable off remote play, like the switch which looks like it will absolutely destroy Vita in terms of power. But I've never played a Vita so not too sure.