Knitebane, I'd hate to side with Bush here, but he's right on this one point. You need to show how he worked specifically on a Microsoft-funded project in order to show bias, and even that wouldn't necessarily translate to bias on this study depending on what the project was. Loads of companies and organizations fund schools like this, so just funding doesn't mean anything, except in extreme cases where one company practically owns the whole IT department.
Of course, Bush's logic turns on him here, since he used an old IBM grant to iBiblio to say that Pamela Jones of Groklaw was just an IBM schill since Groklaw runs on iBiblio.