Only to the individual but honestly how much does cumulative number of hours played matter to anyone?So how much do exclusives matter outside of these enthusiast forums?
The ranking is based on cumulative hours played across the playerbase, not on total number of players or sales.
This means that a game could have a low attach rate and not be significant to most but those who play it play it a lot more often. What would that mean to anyone? Manufacturer, publisher or those buying the console. I'll let you be the judge of that.