Have you been following trends over a number of weeks to make this claim, or is an observation based on one-time checking of the popularity on amazon?
Anything beyond 100 is pointless, really, and without examining it over a period of time it's... well, it's even more pointless. I can tell you from a month or so of following amazon.jp's top 100 that the PS3 version has been hovering inside the top 40 mark for quite some time. Haven't seen the 360 or Wii-U versions at all inside the entire top 100.
It may well be that the Wii-U has more amazon.com pre-orders, but with the numbers you're giving it'll be something like 100 for Wii-U v. 20 for the PS3, or equally small-time figures. I'd hazard a guess that with less on the immediate horizon, Wii-U owners may be more likely to pre-order a game in advance than PS360 owners. So it's certainly possible. But I wouldn't go making any claims or drawing any conclusions without doing more research first; and your OP seems to be desperately grasping at straws to make a success out of nothing.
Wii-U will have many software successes. This does not appear to be one of them at this point.







