Obviously Church Turing tells us all substrates are the same in power. So when we talk about running well on X we mean something else. WASM is not like any CPU

Obviously Church Turing tells us all substrates are the same in power. So when we talk about running well on X we mean something else. WASM is not like any CPU in common use today. It's a stack machine with structured control flow and strongly typed pointers. The instruction sequence is a graph. Memory is not a flat address space.