Algeria dwarfs Asia: about 2,322,788 km² km² against 44,580,000 km² km². At true size Algeria is about 19.2× larger — the whole of Asia fits into Algeria roughly 19 times.
The old Mercator map treated both about equally (1.3× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Algeria fits 19× into Asia.