If the Switch is discontinued later it will also be interesting to know if Xbox van actually best the Switch in a single year. I expect the Switch to outsell Xbox series in 2025 and if the rumoured successor launches in 2026 we could as well add 2026.
However since I think the 2026 is unlikely at best I will vote for Xbox Series and estimate it will outsell Switch in 2026.
Please excuse my (probally) poor grammar