Queen Kuntī specifically adores the incarnation or descent of Lord Kṛṣṇa above all other incarnations because in this particular incarnation He is more approachable. In the Rāma incarnation He remained a king's son from His very childhood, but in the incarnation of Kṛṣṇa, although He was the son of a king, He at once left the shelter of His real father and mother (King Vasudeva and Queen Devakī) just after His appearance and went to the lap of Yaśodāmāyī to play the part of an ordinary cowherd boy in the blessed Vrajabhūmi, which is very sanctified because of His childhood pastimes.
Śrīmad-Bhāgavatam 1.8.21, Purport (Excerpt)

