This misses the point. All large DoD contract are usually followed by a lawsuit from the loser. I have seen this happens so many times. If MSFT lost, they would have probably sued.
I've spent a lot of time around government contracting and this whole bid process was mind-boggling badly handled by the government. The number of conflicts-of-interests involved throughout the process are absurd.
I remember when Boeing first was awarded the US Air Force tanker contract. It was soon rescinded for, among other things, fraud. They won the project again the second time around.
Recently, the US Air Force has refused delivery of the tankers because of manufacturing flaws.
Comparatively the A330 MRRT, which the first round winning bid was based on entered service June 2011.