There are some differences in the way Web Determinations renders decision reports from Siebel. Some of this is necessary as Web Determinations has access to more information, where as the Siebel Decision Report rendering is an XML transform of the Decision Report XML.
If the information you want to display is present in the Decision Report XML you could consider changing the XSLT that renders the decision report.
See the install instructions for the location of the XSLT.
Thanks, Frank. I've made sure our Connector team is aware of this.