The CNN story is a good preliminary analysis of what may have happened causing the ship to list and ultimately list and then sink. The significant fact is that had there been a prompt assessment of the ship damage the evacuation could have occurred long before it became so difficult for the lifeboats to be boarded and launched. The analysis demonstrates there should have been more than adequate time to have everyone evacuated from the ship before it filled with water, listed, and began sinking.
It would seem once there was any evidence of a hole below the waterline that orders should have been given for all passengers to go on deck and get ready to abandon ship. The investigators will come up with a similar analysis to determine the reasons for the seeming delay in the order to abandon the Costa Concordia.