3DS - 60-65M: Similar to GBA in Japan, much weaker than GBA in the west
Wii U: 9-13m: Similar to GC in Japan, much weaker than GC in the west
PS4: 85-95m: Similar lifetime figures (but flipped EU & NA) but much weaker in Japan than PS3 + X360 (80-85m west...+Japan)
X1: 50-60m: Between X1 and X360 in West, very weak in Japan
Vita: Weak Everywhere. Won't top 15m
3DS is past peak, X1 and PS4 peak next year - they're much cheaper than X360 / PS3 were adjusted for inflation, and core gamers into graphics will bleed back to the PC faster this round since the machines weren't overengineered like crazy. My numbrs are actually high too, if you reckon that Kinect / Move added 18 months or so of life to X360 / PS3 late, and that won't happen this time.
People are difficult to govern because they have too much knowledge.
When there are more laws, there are more criminals.
- Lao Tzu