It is worse than a hurricane and it is worse than a train wreck. It was a deliberate action taken against us. Talk to someone whose father died in a car accident and then talk to someone whose father was murdered. Not the same thing. A deliberate malicious attack is far worse than an accident or an occurrence of nature. It may not mean anything to you in your detached little "nihilist" life, but to normal people with normal feelings, it means a lot. Not all of us have manipulated our emotions so coldly as to brush off terrorist attacks as a part of life equal to a hurricane or a train wreck. Of course we can't let it run our lives, but it can't be ignored.
9/11 was worse in some ways, for certain. If we're talking about day-to-day impact on the lives of millions of people, both in the short term and the long term, it doesn't compare to Katrina, which decimated an entire city and had people living in third world conditions for a week. If we're talking about the economic impact, or the unexpectedness of it, or its effect on U.S. policy, or how it changed the lives of the thousands of families directly affected, 9/11 is unlike anything else.
I don't think reducing it to the word "worse" is helpful at all. They were both godawful.
