I hate to disrupt all the opinion with fact... Well... here is a transcript from MSNBC. cite included...
http://www.msnbc.msn.com/id/28683246/

As the cabin took on water, Sullenberger climbed out of the jet only after the four other crew members and 150 passengers made their orderly exit. When he reached a raft, someone on a ferry tossed him a knife, and he cut away the tether to the jet.

One by one, the passengers were plucked to safety from the rafts, Hood and Sullenberger the last ones left. The passenger insisted the pilot get off first, but Sullenberger refused. He had been the last off the plane, and he would be the last off the raft.

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Now, to really cut through the opinion, you have to go to the origional stories, and see what witnesses said. In the Villager interview with the Sosa family, you will see that not all the passingers had access to rafts. The coach passingers had to climb out onto the wings - where, by luck, the plane stayed afloat until they were rescued. There is still a question about why the plane floated as long as it did... it fully sank next to the sea wall at Battery Park, where I photographed it.
As you see above, he was the last one out of the rafts. However, armed with the Sosa interview, you realize that the statement above fails to take into account the people still in danger on the wings while he is in the raft. Mr. Sosa fell off the wing into the water at one point, as did several others, who were pulled back onto the wing by fellow passingers. There was an element of luck in the fact that no one died.
All the best
lor