I thought the idea behind these were not that the DOM updates are "fine-grained" (they are in all modern frameworks), but that they usually skip the "VDOM with a global state" model and instead try to have smaller chunks of a page control itself.

So they might work very well if you can contain the state to a single component, but if you have deep shared state dependencies or changes in state in one component that changes a lot of other parts of the site it won't work as well.

I'd also question if (with most modern frameworks) the framework is the primary bottleneck. I usually use hyperapp-v1 as my frontend and find that loading less and optimizing my own code usually leads to better gains than tinkering in the framework.

Not saying that one should ignore benchmarks, but they should also not be the "end-all" measure of a framework.