Not that I know of - but I mainly flew to/from KIX which was always a lot quieter than NRT. The only flight I know the exact details of nonrev's listed was a Swiss flight to ZRH - and I was the only one.
I flew NRT-LAX a couple of times with DL (loved it) and was upgraded both times, so I guess there weren't many nonrevs on those two flights either, if staff from a non-partner carrier can a) - get on with a boarding pass at check-in and not having to wait till "last minute"; and b) - get upgraded.