The bigger the virtual dom the larger the performance gap is supposed to be. But, true, would like to see some benchmarks from the real world, i.e rewrites and such.
Perhaps not a great comparison, but here are the Svelte and Vue HackerNews feeds. Not a great deal of difference, but perhaps it's too simple for performance to really matter.
I know Svelte does clever things to avoid a virtual DOM, but is the difference in practice really appreciable?