It's the first smartphone with 64bit CPU, it's a significant achievement, and they are rightly proud of it. I thought comparisons to the original iPhone were very silly though.
Non techies that I know hear 64 bit and immediately think that it's better. When friends show me a new lap top or whatever else, they say it's 64 bit. When they're shopping they ask if something is 64 bit. They don't understand why it's important, but they think it is.