For some traits, I'm seeing that the unique visitor volume in Audience Manager is as low as 50% of the volume that we're seeing in Adobe Analytics. Is that normal or does that seem to low? I know that AAM doesn't accept visitors with 3rd party cookies, so I'm sure the discrepancy varies by industry.
Are there any other reasons besides tagging mistakes and 3rd party cookies as to why there would be a discrepancy?
I used c_events that contains "prodview", cart addition and purchase events all work fine.
Also, is "d_rs" the one to use when I want to include data from only one specific reporting suite. It is in the unused signal report and the "unique" look fine after i used it to create traits and segments in AAM. Are there any limitations when using it with others such as c_evar, c_prop, c_events, etc?