Can you provide a quantitative comparison between the two biographies of Baba written by Shri Dasganu Maharaj, and how do they relate to the Shri Sai Satcharita?

Certainly. According to the details provided in Chapter 0, Shri Dasganu Maharaj authored two biographies of Sai Baba. The first is found in his Bhaktalilamrut and consists of 12 pages with 509 verses. The second is located in his Bhaktisaramrut and is also 12 pages long, containing 497 verses. While described as excellent and graceful, both are noted for being very short. Chapter 0 also observes that the stories contained within these two short biographies are mostly the same as those found in the Shri Sai Satcharita, indicating a high degree of narrative overlap between these works.