India is clearly the larger of the two: about 3,155,807 km² km² against 8,600,000 km² km², roughly 2.7× at true size. Drag one onto the other on the map above to feel the gap.
The old Mercator map treated both about equally (1.2× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
India fits 2× into Oceania.