China is clearly the larger of the two: about 9,371,225 km² km² against 3,155,807 km² km², roughly 3× at true size. Drag one onto the other on the map above to feel the gap.
Both sit in Asia, 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 3× you see above.
The old map muddied it further: Mercator inflates China about 1.6× and India about 1.2×, so on a Mercator-style map this pair appears 3.9× apart instead of the true 3×.
India fits 2× into China.