Michael Brown formerly of FEMA (during Katrina) criticized Obama for reacting too fast.http://www.huffingtonpost.com/2012/10/30/michael-brown-obama-hurricane-sandy_n_2044971.html?utm_hp_ref=mostpopular
There was certainly little chance that Hurricane Sandy would not be a false alarm. Furthermore the ability to move supplies into position is a very smart thing to do. I don't think there is any politician complaining about the reaction of President Obama. Even Mitt Romney has changed his position on FEMA and maintains that he will keep this emergency ability for the United States.
However the aftermath of Sandy will not be a walk in the park. There will be loans necessary to pay for reconstruction, overtime work by emergency workers will be needed to be paid for and long term ideas will be presented and implemented to react for another similar disaster.
Words from the article: "Obama declared states of emergency all along East Coast states in the path of Sandy on Sunday, well before the storm hit, allowing federal resources to start flowing where governors thought they would be needed. FEMA and local responders were able to pre-position a lot of the material being drawn upon now.
Obama also held a press conference warning people to pay careful attention to the storm.
"This is a serious and big storm," Obama said after meeting with FEMA officials and talking to governors Sunday. "And my first message is to all the people across the Eastern seaboard, Mid-Atlantic, going north, that you need to take this very seriously."