The article's interpretation is wrong.
From the chart, talking about Spider-Man Remastered:
Released about 6 months ago and has sold 400K fewer games than Days Gone
Is saying (at least in my interpretation) that it took Spider-Man Remastered about a third (really, less, since Days Gone released longer than 1.5 years before that) the time to do 75% of the sales of Days Gone.
In any case, DSO gaming says that:
Spider-Man Remastered came out six months after its console release
which is verifiably false. Spider-Man remastered came out in November of 2020, while the PC release was 2022. The chart referring to "6 months ago" is saying the game released on PC about 6 months prior to February 2023.
The article is also saying that the chart implies:
The best strategy for Sony is to release its game 1-2 years after their console release.
Which isn't what the chart shows or implies at all. It implies only that (popular) games that are for sale longer sell more copies. Which is kind of a "duh" implication.