As long as people are paying for the network and watching shows on there, then that is a far better way of judging how popular shows are then by looking at the ratings of shows over night or whenever they come out, as so many people have got used to watching shows at the own convenience, that ratings just do not matter, and are simply not as important as they once were.
For example, if I were to watch a recording of Smackdown that I had saved from last weeks show today, would that count towards the rating of that show? (I doubt it), but I would be still be watching it, hence why looking at ratings is just such a poor way of judging if a show is doing well or not.
I get why it was an important thing during the whole WCW v WWF war in the 90's, but now it is honestly not important at all, the only people that take notice of them tend to be people stuck way back in the past, thinking that it still is that sort of era of must watch, as it happens tv.
We are not in that era anymore, we are in the watch when you like era, if someone wants to watch a Raw on a Wednesday at 3pm, then they can, same for say a Smackdown on a Saturday a 10am, there really is not set schedule anymore for people to have to watch a show when the tv companies say so, and it is brilliant, and much more easy to watch a show on your own time, when you personally have the time to watch it.