PS4 is most wanted console in Japan at the moment.
PS4 games are the most wanted, above PS3 and 3DS games ( http://www.gamekyo.com/newsfr56098_most-wanted-famitsu-21-01-2014.html ) and yet, you think it's not going to be as big as some are expecting ? yeah, if some are expecting 2M in one month in Japon, obviously, but in this situation, it's absolutely not insane to think it could reach PS2 level of sales at japan launch ( 1M in 2 weeks )
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m