Aspose.Pdf is professional Pdf created engine which means it can create Pdf documents from many types of files including MS Word(cooperation with Aspose.Word), Html, XML, etc.
At present, the latest release can not support such conversion from XML to HTML/RTF through PDF because of the technology issues.
Here is the details about conversion from Word2PDF.
Generating HTML or RTF using Aspose.Pdf's xml is not supported. We will consider adding support for it later. Aspose.Word can't understand the format of Aspose.Pdf's xml. You have to recreate your report in order to export it to HTML.