It's not exactly directly comparable... Parcel is probably the first framework like this that's actually got code splitting and asset use working as I'd expect. I know it's using other tools underneath, but it brings new meaning to the phrase "just works" that doesn't include some scss, images etc, which I'm not sure ESbuild supports the "import" references of, or that it will do templating for the html, let alone a dev server with a watch to (re)run the build.
There's also typescript and type checking to consider, for those that use it.
I'll definitely be playing with this as time permits, but I'm not necessarily "all in" on it just yet.