No, notice that the sales numbers of the Sony slide have have an asterisk which in the bottom left corner of the slide indicates that it means "as of March 2022".
And it's a powerpoint talking about a fiscal year, so in all pages when they mention until "march 2022" they mean "until March 31, 2022".
I made the maths in the image I posted. Including all games, the ones that performed better and the ones that performed worse. And not only the ones in the last year, but including all the ones they published in Steam since 2015 and making the estimations of what they sold since 2015.
No, it's:
GoW official 971K from mid Jan to end of March 2022. (First 2 months and a half)
My GoW estimate is 2.9M from mid Jan 2022 to end of March 2023. (First 14 months and a half)
Even ignoring with your too low estimate for Spider-Man you're missing there the sales of Days Gone, GoW and Horizon during the whole recent fiscal year (where they got nice and frequent discounts), plus the complete sales of Uncharted, Helldivers, Guns Up, Everybody Goes to the Rapture and Predator: Hunting grounds.
As can be seen in my picture the 12M estimate is for ALL the Sony published games and since 2015.
Also, Spider-Man got around 60K reviews in 7 months and a half. 700K would mean only 11.6 sales/review. When the group of lowest average sales/review games, the indies and lowest priced games, have an average of 20 in the smallest part of the average range for the games released in 2020 and later.
Another way to see it, as of today they have these reviews:
-Horizon: 93K reviews
-Spider-Man: 60K reviews
Let's assume Horizon sold 0 copies from April 1 2022 to April 1 2023, which in reality obviously is not the case at all, and that it continues with 2.4M sold. That would mean 25 sales per review in the case of Horizon, when we know it should be higher because it must have sold since then. Now let's apply that same too unrealistic multiplier to Spider-Man: 60K reviews x 25 sales/review = around 1.5M
As you can see with the unrealistically low estimate gets way closer to my estimate than yours. If instead of using 25 sales/review we go to a more realistic estimate but still pretty conservative of 30 sales/review for the games released after 2020, and add the other Sony games you have my table:
In the Sony slide, if we divide the revenue of each game by the units it sold we see they got $25 of revenu/copy in Horizon, $26.6 in DG and $27 in GoW. An average of $26.2 of revenue per copy. Multiplied by 12M copies that would be $314.4M. A very rough estimate because the pricing and discounts vary per game and year.
Sony estimated that they were going to make $300M, so assuming they achieve something relatively close my rough estimate doesn't seem pretty crazy. It's pretty reasonable.