Hi Josh,
So basically, we are looking at three sources to get post-click conversion numbers. Twitter’s UI, Tune’s UI, and Tune’s API. The numbers coming from Tune’s API show a post-click number that is substantially higher than the other 2 and more closely aligns with the total number (post-click + post-view). We reached out to Tune to ask how exactly they measure clicks, and got this response:
“If they send us a click marked as a click, then we will record that and attribute accordingly. Twitter would be the best source to ask what types of things they consider as clicks or as impressions as we will record the data as it is sent to us.”
Let me know if this helps!