I have only side loaded books, converted to kepub by Calibre, on my H20. None have been purchased from Kobo. On the statitistics screen I get the progress, percentage wise, of the current book and the progress, percentage wise, of the current chapter I am on. It also gives the estimated reading time to finish the current book and the estimated reading time in the current chapter.
It shows how long I have been reading the current book. My average time per reading session in the current book. How many page turns I have made, and the average page turns per minute.
For the entire library, it shows what percentage of the entire library I have read, how many books I have finished, and the total amount of time I have spent reading.
Sorry this picture is so fuzzy, but the top 2/3s of screen is the current book, and the bottom third shows entire library stats: