Interesting to know.
Take note AX3000 rated WiFi 6 router does not mean to have better coverage than AX1800 rated WiFi 6 router.
If we look at Starhub's comparison of Nokia Beacon 2, Linksys MX2001 Velop and Linksys MX4200 Velop (triband), you can see that Starhub actually estimated that Linksys MX2001 Velop to have roughly the same coverage as Nokia Beacon 2 (two units to cover 3-4 bedroom).
https://www.starhub.com/personal/broadband/routers.html
It is also interesting that Starhub also puts the coverage of the 10G Nokia XS-2426X-A all-in-one ONR to be similar to the Linksys Velop MX4200 Velop (1-3 bedrooms with single unit).
Take note that the Starhub estimation is based on the assumption that the placement is rather optimal.