1.) The syntax in creating the view: is just plain function calls which the rust compiler can accurately tell you about errors in your code, ie: typo, unclosed brackets/braces/parenthesis mismatch.

2.) Concise code, there is not too much ceremonial/boilerplate code to get started.

3.) Less code in the library maintain, there is no parser(which are mostly complex).

4.) Sauron is using wasm-bindgen, yew is using stdweb.

5.) It's in the early phase, so the performance is not yet optimized. https://github.com/ivanceras/todomvc-perf-comparison/

Nothing compares. Nothing compares to Yew.

It's based on Yew itself and since Yew is React/Elm like, but this is more Elm inspired I assume it compares like Elm vs React.