Is it true that even the lowest person in Jannah will actually have far more than times this Dunya?

Salam aleikum brothers and sisters. I have heard some imams say that the lowest person in Jannah will in reality have so much more than this entire Dunya and everything in it and that Allah SWT just uses the example of 10 times this Dunya and everything in it to give our extremely limited brains a tidy idea of how much he will actually get. How true is this?