How does the Shri Sai Satcharita compare to Saraswati Gangadhar's Guru Charitra in terms of content and reliability?

The provided text offers a comparison between these two sacred books. Chapter 0 explains that while the stories in Saraswati Gangadhar's Guru Charitra are considered reliable and based on experience, there is no way to know if they came from his direct experience or through oral tradition. In contrast, the Shri Sai Satcharita's reliability is bolstered by its sources. Many of the stories and Leelas were witnessed by the author, Annasaheb, with his own eyes. The rest were experiences communicated to him by devotees, many of whom were still alive at the time of writing, adding a layer of direct testimony.