I agree that Boston is the favourite to win this simply because of Harvard and MIT. Beyond that though, they also have an unbelievable plan in redeveloping the inner belt in nearby Somerville. Here's a screenshot:
The red circle is the inner belt set for redevelopment. It's an area of 140 acres with the potential to build 5.5-10 million sqft of office space. If given to Amazon, this would put their campus within 2km of Harvard, MIT, Downtown Boston, and 4km of the airport. The inner belt is also connected to the red line, green line, and I-93. Here's a link for the redevelopment plan if interested:
http://www.somervillebydesign.com/w...elt-Brickbottom-Plan-Draft-2014-152-pages.pdf
I've been kind of obsessed with this whole thing so I've poking around in other city's sub-reddits to see what their ideas and attitudes are towards getting HQ2. It's incredible, if you search "amazon hq2" in reddit you'll see that almost every city from Tulsa, OK to Halifax are excitedly discussing their chances of landing HQ2. Our saving grace is that Boston is the only city that I've seen whose citizens vocally
do not want Amazon. They are worried about further ruining things such as housing costs and gridlock, and there seems to be a general consensus of this attitude. Mix this with Mayor Marty not wishing to get into a bidding war and we all of a sudden become much more attractive option (assuming we put forth a good incentive package).
I don't think there is a city in the world that can compete with Boston, they have almost the perfect setup. It's really just a matter if they want it or not, and so far it seems as if they don't.