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The biggest sales advantage that PlayStation has had over Xbox in a single year, after the ps2, was 2017 when the PS4 outsold the Xbox One by 10.6m. It sold 116% more than the Xbox One that year.
As of November YTD the PS5 is 12.3m ahead of the Xbox Series this year, already destroying that PS4 2017 victory with a month still to go. We're likely going to end up with roughly a 15m sales advantage for PS5 and outselling the Xbox Series by close to 200%.
So yeah this will be the biggest sales advantage in a year PS has had over Xbox since the PS2 vs Xbox days by a huge margin. Xbox has dropped the ball this year and been completely dominated.
The best PS4 ever managed in a year was 2.16:1 over the Xbox One and PS5 is going to hit somewhere around 3:1 over the Series this year.
