Some aspects of Japanese cell phones were better than some aspects of American phones. Simplifying it to DoCoMo having a lot of sway is, IMO, ignoring an awful lot. Tokyo has tremendous population density. Demand was high for mobile Internet access because not everyone has the space for a home computer, and people spend a lot of time out and about. People send emails like mad because it's cheaper and because it's more polite than yelling into your handset while on the train. Payment chips got integrated because the local McDonald's might pass a hundred times the number of customers per day than your local American one.
Of all the things driving Japanese cell phone technology, the ones listed seem pretty minor. Give that sort of focused demand to US carriers and I think you'd see far faster adoption of specific technologies.
By the way, my Japanese cell phone has a built-in TV receiver and recorder. And as near as I can tell, SoftBank voicemail isn't voicemail at all; it's an actual answering machine built into my handset. Weird.