Africa dwarfs Sudan: about 30,370,000 km² km² against 1,863,027 km² km². At true size Africa is about 16.3× larger — the whole of Sudan fits into Africa roughly 16 times.
The old Mercator map treated both about equally (1× vs 1.1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Sudan fits 16× into Africa.