This year? Oh OK. Yeah, I think this year specifically PS5 should be able to outsell Switch for the year, but it really depends on how aggro SIE get with sales promos in the US for BF and Christmas, and if they do some across Europe during that timeframe. And that's versus Nintendo having any special sales promos & bundles, and how big their Japanese numbers are for the holiday period.
In any case, I'm expecting any unit sales lead by either platform will be within 10% of one another, at most. It should be fairly close and, well, that's a bit telling for PS5 considering this is Switch's twilight year. Yes, PS5 is more expensive and that will always affect demand for volume being moved, but it's also the newer platform, has the PlayStation brand behind it, and has an Xbox that's basically dead in most global markets only halfway through the generation.
By all accounts, PS5 should be comfortably outpacing Switch in global unit sales when Xbox is barely able to hang on with America and UK. But that isn't what's happening, and I think it's fair to say the reasons are more than simply PS5's price.