Marketing Channel on Pageview - VS - Marketing Channel on Custom Event Metric
Let's say I want to get a breakdown of which marketing channels were attributed to a pageview for page x.
Let's also pretend that I have a custom event set up to fire for each pageview of that same page (page x), and then want to see what the marketing channel breakdown looks like on that metric.
Conceptually the pageview metric and my custom event metric (the pretend pageview metric) are the same'ish thing right? At least on the surface.
But what would account for such a large discrepancy in the numbers reported against either scenario. Specifically, I am seeing "Paid search" getting a lot of volume in the first scenario, while in the second scenario I am seeing a lot of 'Referring domain' volume instead (where I would have expected it to remain consistent with the first scenario.
Any ideas on what might account for the differences here?