Does the Satcharitra compare Sai Baba's eternal nature to that of other saints?

Yes, Chapter 43 explicitly compares Sai Baba's enduring presence to several other revered saints to illustrate that he, too, is beyond physical death. The text poses the question, "Did Maharaj Gyanoba (Gyaneshwar) leave?" and notes that he gave darshan three centuries after his time. It then lists other saints and their associated holy places, stating that just as Nath Maharaj was the light of Paithan, Tukaram Maharaj in Dehu, and Samarth Ramdas in Parli, "Sai is the same in Shirdi." This comparison reinforces the idea that Sai's power and presence continue unabated, just like these other great souls.