Not necessarily. Performance scaling with resolution is not always linear. 4K to 1440p isn't always a 50% performance reduction, so what you need for 4K 30 isn't always the same or higher tina 1440p 60.
Red Dead Redemption 2's PC version is a good example of this trait, as you need similar hardware for 1080p 60 FPS and 4K 30 FPS.
I guess we will see when the game launches.