The goal was to write a network driver in several languages. Nobody said anything about comparing memory management techniques, nor would the Swift implementation use a stack allocator anyways.
I don't really have the skills to do an accurate comparison across many languages, and if I pick just three or four it's going to get nitpicked to death for being cherry-picked. Honestly, I generally think studies of this kind are mostly doomed to failure, or invariably converge to someone trying to encode x86 intrinsics in Rust.
