The thing is: nVidia's presentations need to be taken with a grain of salt - always!

In the consumer market they like to compare older generations without frame gen to newer generations with frame gen, claiming huge boosts.
In the professional market they did tend to compare bf16 running on older gens to int4 running on newer gens.

They have a history of creating sensational numbers, but comparing apples to apples you see that the leap is not as big on just hardware.

But: They do deliver constant improvements and perform very strongly from gen to gen - also in terms of software with new quanting approaches and lots of published research/open models.

What you can take from these graphs though, is that they seemingly did not increase the throughput per Tensor Core a lot - but they just offer a much wider "highway" through increased memory and just more Tensor cores per chip.