Asking too many questions sometimes dont make any sense, i have an old website, 5 years old which is PR0, dont know for what reason (assuming some competitor just reported for link selling dah, big deal) but that is a very high authority site in the niche and is in first place of the google serps since 4 years, just add a link to any site from that website and the backlink gets indexed in hours time if not earlier, so sometimes these assumptions and too many questions just dont fall in place with google