I am not agreeing with the argument, I am just explaining what they are saying about Sandy.
When Sandy hit, both campaigns stopped for 4 or 5 days. Obama got to be the President and look Presidential while helping out and making speeches the way any President would at a time like that. Romney assisted at a few places, but making a speech would have seemed very self serving. In a nutshell, Obama was able to continue campaigning and Romney had to stop. In addition, Obama stood next to Chris Christie and basically hugged him. It was a great win for Obama and the Democratic party across the country. Nobody saw Romney for 5 days, but everyone across the country saw Obama being very Presidential, and even hugging an influential republican.
...That is what they are saying.