I think all these services are screwed up to be honest, and none of them give accurate numbers. Most of the time, when I manually check the URL's that OpenLinkProfiler says have backlinks to the target site on them, I can't find the backlink anywhere within the page, even when I view the source code. Not to mention, OpenLinkProfiler, Majestic, and aHrefs all return different numbers and results, which is really confusing, because I don't know which of them, if any, are even remotely accurate.