most victims of shark attacks go into almost instant shock and feel little to no pain.
where as with elephants they tend to kick you around and beat on you for more then a few seconds. have you ever seen the video of that trainer that got attacked? the elephant kicked him around the block, literally. being attacked by an elephant is more like being bucked of a bull in a rodeo, they just keep coming at you.
sharks usually bite then release. if its bad enough to kill you, you die, if not, you go into shock and wake up in the hospital.