In this project, Blue Origin is working with Lockheed Martin and Northrop Grumman, while Dynetics is partnered with Sierra Nevada Corp. So it makes sense that Blue Origin received a much larger chunk of money than SpaceX - they're somewhat unproven in the space, but are partnered with experienced firms that have been there before and are more likely to deliver. And SpaceX is probably going to do whatever they plan to do with or without the contract money. I'm interested in seeing what Dynetics is up to... as I'm sure are a few others.
Interesting times right now.