Testing report discrepancies with Google Analytics (Advanced Segments)

So I ran into a brain-racking situation with my employer the other day.  A certain 3rd party advertiser is linking to one of our websites from several places on their all-flash website (and not for free mind you).  In an effort to gauge the utility of these links, I’ve been perusing through both Google Analytics (to measure the number of visits from the advertiser’s website) and the admin the advertiser provides us (which tells us the number of times people have clicked on our links).

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