How come the CPython interpreter is so slow when compiled to WebAssembly? According to the figures in the article, it runs at 23% the speed of the native versio

How come the CPython interpreter is so slow when compiled to WebAssembly? According to the figures in the article, it runs at 23% the speed of the native version. Wasmer, which they're using in the benchmarks, should run code "at near-native speeds" according to the docs[0]. Apparently it has multiple compiler backends, so maybe the choice of backend affects the result? [0] https://docs.wasmer.io/runtime https://docs.wasmer.io/runtime