Yes, he emphasizes the value of the Rosary, especially in the context of family prayer. However, this does not suggest that he ranked the Rosary as superior to the daily examen. His reference to the Rosary as "one of the best" prayers indicates high regard, but doesn't conclusively place it above other forms of prayer. The context of his statement is about prayers outside of the Liturgy of the Hours, which he acknowledges as the peak of daily family prayer.
The Rosary and the daily examen serve different purposes and can complement each other. The Rosary is a form of prayer that focuses on meditation on key events (mysteries) in the life of Jesus and Mary, making it an excellent tool for communal prayer. The daily examen, on the other hand, is a more introspective practice recommended by St. Ignatius of Loyola, focused on discerning God's presence and guidance in one's daily life.
I guess, Pope Paul VI did not intend to imply a direct comparison or ranking between the Rosary and the daily examen. Instead, he highlighted the unique values of both, encouraging the faithful to engage in diverse forms of prayer - both communal and personal - to enrich their spiritual life.