Lions use their teeth in hunting by clamping the teeth around the prey's neck. This sufocates the prey thus killing it. Lions also use their teeth to eat and kill predators. They don't sufficate prey with their teeth! They snap their necks. They say that in just about every wildlife video.
White lions and normal lions are the same so lions should have sharp teeth plus claws because they hunt animals and their sharp teeth and sharp claws are two of the adaptations they have that are essential to bringing down prey.