Actually I believe the Tiger Shark is the most aggressive shark also has the deadliest bite being that its teeth are razor sharp. Have a video of the Anatomy of a Shark Bite where they simulate the bite of a Great White and a Tiger Shark by actually making life size recreations of the beast. They also created a as realistic as possible leg from the foot to the thighs for the sharks to attack. They did tests from a stand still and tests from the sharks moving how they would in the water when charging at prey. The Great Whites bite is ferocious and rips flesh and breaks bones while the Tiger Sharks bite is a clean cut, essentially cutting the flesh and bone right in two. On the other hand the Great White has alot more power and bigger jaw width so the bite would be bigger. Basically either way your SOL!!!