Asia dwarfs Greenland: about 44,580,000 km² km² against 2,154,754 km² km². At true size Asia is about 20.7× larger — the whole of Greenland fits into Asia roughly 20 times.
The old Mercator map treated both about equally (1× vs 11.8× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Greenland fits 20× into Asia.