Think they were referring to budget differences and/or multiplayer vs. single player offerings. Although, you are right that quality has nothing to do with why Sony wouldn't put their games on a service like this day one.What a peculiar viewpoint.
So...what happens if Microsoft starts putting out 85-95 Metacritic games next gen? Although Forza Horizon is already well in that range.
What happens to your theory there? You think GamePass exists because of the Metacritic of their first party games in the last couple of years? Because even Gears and Halo are still in the 80s.