Canada dwarfs Greenland: about 9,872,102 km² km² against 2,154,754 km² km². At true size Canada is about 4.6× larger — the whole of Greenland fits into Canada roughly 4 times.
Both sit in North America, so this is a same-region comparison: the new Equal Earth map draws both with the same honest geometry, and the real gap is exactly the 4.6× you see above.
The old map muddied it further: Mercator inflates Canada about 4.1× and Greenland about 11.8×, so on a Mercator-style map this pair appears 1.6× apart instead of the true 4.6×.
Greenland fits 4× into Canada.