What is more deadly tiger shark or great white shark?

Depends on where you are swimming. If you are in Hawaii then you should fear the tiger shark. If your in California then fear the White shark. The largest tiger shark ever accurately measured was 23.9 feet. the largest white shark ever accurately measured was just over 20 feet. However white sharks reach a larger size more commonly than a tiger shark. Tiger sharks will try to eat anything and will not leave you after biting. A white shark will make a massive strike.