I primarily use PBNs like most of the seo big boys. However, I'm analyzing some niches where the comp is all assumibly GSA blasted sites with 16,000 homepage links all from shitty websites. In this scenario how do you accurately quantify/guesstimate the competition? It's not as if I can reverse engineer it like real websites because there is just so much crap links here. I'm also wondering how you compare something like this to PBNs? I mean how would you know how many "good links" it takes to compete with 16,000 "shit links"?