A few points.
1) Renato himself says Moses and Geoffrey could run 2:04. I'm not sure if he means 2:04:00, but lets take the average and say he means 2:04:30. They ran 2:03:02 and 2:03:06 so right there that is nearly a 1:30 difference.
2) That brings us to whether you think Boston is slower or faster than a flat course. If you think it's slower you need to add more time to #1. So that easily puts you over 2 imnutes.
If Boston is a faster course than a flat marathon with certain tactics (going out harder perhaps on the opening downhills like this year) then that doesn't take away from it being an aided course.
Nearly everyone is in agreement, the wind played a factor. How much is the question?
If you still don't want to acknowledge the wind think about this:
Before Monday what if I told you the key to running any marathon (Boston) is to just go out faster. Run the first half faster of the course faster than anyone ever before. That actually makes things easier for you so you can really attack the 2nd half. You then will be able to run the second half even faster and faster than anyone in ANY marathon. Not only that you will be able to really attack the section of the course with the big hills (Heartbreak Hill), running one of the fastest 5ks splits ever in a marathon on that uphill 5k (and contrary to what some have posted the 5k stretch in Boston is a net uphill. See here from 18.6 to 21.7 http://www.mapmyrun.com/s/rout...on/1850635 ).
If I had told you all of that before Boston you would have said I was crazy. Then what if I told you, wait this already happened. You would have thought "This can't be. There must be something else going on." That something else is the 20mph wind.