I definitely don't think so.
Do I think Xbox Scarlett will leave the PS5 in the dust like the 360 did the PS3 for most of last gen? No. However, that still remains to be seen.
Do I think the Xbox Scarlett and PS5 will be pretty close, or at least closer in sales next gen than this gen? Yes, definitely. Xbox has bought two handfuls of devs in the past year or so. Among them being Obsidian and Double Fine. Microsoft obviously isn't wanting to do a repeat of the Xbox One's exclusive lineup with the Scarlett. Plus, they already have one massive game confirmed for it, (Halo Infinite). And Fable 4 will obviously be on the Scarlett.
They're also focusing on major hardware improvements to allow for much better fps, and next to no loading times