Unless there have been developments I don't know about you have two problems here..
- SCORM really only exposes a final score to the Gradebook although all the other info the API allows is actually stored internally
- There isn't any across the site Gradebook reporting (it's all course based) and there certainly isn't any detailed SCORM reporting.
I have actually been involved in developing the sort of reporting you talk about for clients but this has all been very specific. Really we need someone to come along and fund this kind of reporting.