It may be different in that tigers are bigger. But if you have someone who has years of experience working with these animals, has the money to properly provide vet care, food, and housing, has the space to provide a proper enclosure and can provide a secure, stimulating environment, I see no problem with that person having a tiger.
I don't think anyone should have the right to say we CAN'T have these types of exotic animals. I just think there should be some kind of regulation to make sure the people who are getting and keeping these animals are not doing it the wrong way and not providing proper care for the animal or ensuring the safety of the public.