It is what they believe.
They also don’t think they lost WWII, only that we cheated.
During my college years I was visiting a friend at home, his father, then a Doctor and a former WWII Bomber Pilot flying out of Africa (think Catch 22) and later England remarked:
"Had someone told me 30 years ago, that some day I would be sitting in my living room watching a Japanese TV and have two German cars in my garage, I would have said they were crazy. Sometimes I wonder if we really won that damn war."