Of course not. Still remains to be seen if SW will even match the PS1, GB and PS4, let alone the PS2 and DS.
In what scenario does it not beat the PS1? Especially when it's pretty much neck and neck with the Wii.
PS1 - 102.50 million
Wii - 101.64 million
NSW - 55.77 million (As of March 31st.)
And that's after Nintendo reported 21.03 million units shipped for the FY 2019. And so far FY 2020 is looking like it will pass that number without even trying.
Switch Yearly Sales:
Week 30 - 2019: 6,741,282
Week 30 - 2020: 11,663,173
Right now, it's a whopping 5 MILLION UNITS ahead of last year's total at this point in time. IF Switch sales for the rest of the fiscal year are completely flat/dead even with last year, that would put Nintendo's shipments at 26.03 million units, which would surpass the Wii's peak year (25.94 million units in FY 2008). That would bring its total sales to 81.80 million units by March 31st, 2021 - the end of this fiscal year. From there, it would only need another 20.71 million units for the rest of its life span to pass the PS1.
So again I ask, in what scenario does it NOT even match the PS1? Its sales would have to crash, burn, and explode faster than a tank truck colliding with a gas station on the freeway for that to happen.