Hi,
My apologies for the error and the confusion. Yes, what I meant was includeZeroImpressions = true, and as for the information discussed by my colleague, that is indeed the correct behavior. The confusion originated from me thinking that the question was getting information of other criteria's hierarchies, where as what you meant was for a single criterion and its other associations to other entities.
That being said, could you confirm what information exactly it is you wish to retrieve using the Criteria Performance Report? I asked because there are other report types available in the AdWords API that exclusively service specific criteria types.
Best regards,
Peter
AdWords API Team