I think you mean the review report, not the paper report. In any case, the review form results are not included in the report, as you've noted; to include these you would need to change the implementation of plugins/reports/reviews/ReviewReportPlugin.inc.php along the lines of the code in TrackDirectorAction::emailDirectorDecisionComment, which flattens review form responses into a plain text field (for email in this case).
I've filed this as a feature request at http://pkp.sfu.ca/bugzilla/show_bug.cgi?id=8569
but be warned that it's a low priority for us at the moment.
Public Knowledge Project Team