The Nielsen numbers are what's used for ratings (at lest that's what's currently used). Various devices do have the capability of course to do all sorts of things, but they don't know your age, income level, gender, etc. which is all part of the data on viewership which Nielsen gathers and reports.
So, in context of this discussion, what you or I watch on any device is totally irrelevant in terms of affecting the official ratings that the networks, advertisers and media uses to gauge viewing habits.
OK. We know that data is data. When a smart tv phones home, it gives info on what channel and for how long.
Data is upped to a database. Data is correlated and sold to buyers. Fox is one of those buyers as are all channels and advertizers. I’s how 2015 world.
Neilson ratings are meaningless in light of far better data. But they give the viewer a feel good and stops them from thinking about what their toys are doing.