The ceilings should be similar, but there is an argument that there are cases where idiomatic Rust might outperform idiomatic C or vice versa. For instance, in

The ceilings should be similar, but there is an argument that there are cases where idiomatic Rust might outperform idiomatic C or vice versa. For instance, in real-world usage, you might do a bit more redundant copying in C in places you would avoid it with the borrow checker in Rust. Conversely, enforcing RAII in Rust might cost performance in some scenarios relative to C.