Hurricane Sandy was a Category 1 hurricane at landfall. That's pretty much the opposite of a SUPERSTORM. Much larger hurricanes have hit New England before. For example, the "Great New England Hurricane of 1938" made landfall on Long Island as a Category 3 storm, killing over 600 people. The Great Atlantic Hurricane of 1944 also was Category 3, killing 390 people. http://en.wikipedia.org/wiki/New_England_Hurricane_of…
You realize that hurricane category is only one measure of a storm, and not necessarily even the most important one? "Superstorm" Sandy is not called that because if its wind speed (which is all that "category" is about) but because of its size , as in physical extent.
First most important is geography - where the storm hits.
Size of the storm is the least important factor. A large but weak storm (such as Sandy) will always be less destructive than smaller but more intense storm - assuming that they make landfall at the same location.
Sandy killed only 131 individuals, despite making landfall in an extremely densely populated area. Within the US, far smaller - but more intense - storms have killed far more people in areas far less densely populated.