What would you say is the performance difference between say running a qt app as native compiled vs running it in WASM? I’ve always been curious but never tried

What would you say is the performance difference between say running a qt app as native compiled vs running it in WASM? I’ve always been curious but never tried. I know it would vary based on the application but I’m guessing something that is maybe calculating some Monte Carlo model and then displaying the result or something else along those lines that actually will max out the CPU at times rather than be waiting on human interaction 99%of the time.