I think it is safe to say that the PS4 will outsell the Wii. it is still too soon to predict the Switch. Switch could get Pokemon and just simply take off. These alignments are deceiving because we know that the DS started slow but completely blew past the Wii. The PS4 is far easier to predict because all we really have to do is read Sony's predictions which this gen have been insanely accurate. And since it's impossible for them not to sell at least 20 million in the next two years, the only real battle is the Switch and PS4. I am predicting that the Switch will have a shot at beating the Wii. We already know what happens to Wii sales by year 5.