Our mass media is a hysteria machine. In Chapter 5 of Numbers Rule Your World, I looked at the news coverage in the aftermath of jet crashes. What's happening in the wake of the cruise ship grounding in Italy is following the same pattern.
Here is an article talking about "10 other horrifying cruise ship disasters". (link) This is just like tables of the 10 worst airline disasters in history. The #1 on the list is unsurprisingly the Titanic. That's really a laughable comparison: 1500 dead and 700 survivors versus 4000 survivors and 10-30 dead. Unless the point of this article is to tell us how much safer travel is today compared to a century ago.
Here's an industry insider advising readers "how to pick a cruise line for safety". (link) Given the scarcity of accidents (see previous post), it would seem pointless to spend a lot of time choosing between cruise lines specifically for safety.