I'm not saying that Dathan will win (although he can), but he will at least qualify and impress a lot of people here.
Dathan's disappointing 2:14:01 at NYC last year will ultimately prove to be a blessing in disguise for him. He will enter the race stronger and wiser than last year and will demonstrate to the world that he IS a great marathoner.
After watching his Flocast training video, the one thing that stands out to me more than anything else is how natural he looks at long distance road running. When you combine his light frame with his smooth stride, you have a marathoner. Furthermore, he has had a very long injury free stretch of quality training.
Good luck Dathan!