DIE HARD 4.0

I don't know what accent is correct in English. Because my English is poor... anyway I watched the DVD "DIE HARD 4.0" when I chose original, I mean subtitle is Japanese. And then I didn't feel strange. Bruce Willis voice is his voice, familiar to me.
But I watched this film with my parents tonight, my parents prefer dubbing. So I watched it in Japanese when I felt very strange. Because John McClane, his accent is like a drunken person. It's really funny dubbing. I think it's rude for Bruce Willis. But if Bruce Willis spoke English with a drunken person in this film, Japanese dubbing is perfect.