Hi Mack,
I just tried it with my 11.2.4 environment having log level for all services set to Basic and then I see Analysis reportservice in Audit-DB (audit report).
But only running as report (using Chrome). With Firefox the Analyse Studio is used and this requests are not added in COGIPF_RUNREPORT.
To see the usage of Analysis Studio you need to look at COGIPF_EDITQUERY table (COGIPF_TARGET_TYPE = 'Analysis ReportService').