It means that sometimes in rust it is possible to have easy/higher level/abstracted code that is just as fast at run time as the hard/low level/finicky code it is wrapping.
In rust:
Diesel the orm is just as fast or faster than rust-postgres which uses raw sql.
In python: Every layer of abstraction is slower than the last. Sqlalchemy is slower than the drivers it wraps, and forgoes a lot of normal python idioms internally to get as fast as it is.