Phil Spencer confident after seeing PS5 presentation - Gamelab 2020 interview

[DonFerrari]

sales2099 said:

DonFerrari said:

Why would you complain of having a better graphical quality? The game will be output to your TV in 4k (and even if it wasn't the TV will upscale it) and with a higher quality than if it was rendered natively at 4k.

It’s sentences like that that make me want to actually understand the tech on a deeper level. Guess we’ll see on a case by case basis. 

pixel count is just one of the components on the overal image quality.

For example look at the Digital Foundry analysis of Detroit Become Human.

It will show the efficiency of the checkerbording used and how much computational power it saved for the game and make clarity compatible with higher resolutions for a fraction of the cost.

So depending on the developer it can make higher quality image using 1440p than 4k for the same power. Of course with unlimited power the pixel count increase will increase image quality, but since consoles are based on trade-off, often you'll be able to make better images by reducing the pixel count.