No, I actually was talking about the browser.
And I have actually tested. You'll find my name on a bunch of public benchmark results about wasm and its predecessor asm.js, all in a Web context,
* Various benchmark posts on Mozilla Hacks: https://hacks.mozilla.org/author/azakaimozilla-com/
* The original wasm paper: https://people.mpi-sws.org/~rossberg/papers/Haas,%20Rossberg...
* The WasmBoxC post: https://kripken.github.io/blog/wasm/2020/07/27/wasmboxc.html
And specifically SQLite is a benchmark that I've looked at many times over the years. It's an important codebase. That's why I added it to the Emscripten benchmark suite, and why it is measured in that last link.
(Fyi, I am one of the co-creators of WebAssembly, I created Emscripten, and I have been working in the compile-stuff-to-the-Web space for over a decade.)