World A: 1 person suffers 1 billion seconds
World B: 1 billion people suffer 1 second each with the same intensity per second

World B strikes me as much less bad than World A.

World C: 1 billion people suffer 2 seconds each with the same intensity per second

World C strikes me as quite less bad than World A.

World Z: 1 billion people suffer 1 billion minus 1 seconds each with the same intensity per second

Can we say World Z is less bad than World A? How can we calculate the disvalue of the world? Distributional consideration should be taken into account or not?

Conundrum of negative population ethics