Legends has a pretty big amount of hype behind it
Outside of NeoGAF? I don't know. In marketing terms and general brand awareness the Wii U is playing second fiddle to the absolute tidal wave of AAA third party stuff on 360 and PS3 in the early months of 2013, and by extension so are its games. Compared to everything else going on in the industry, I can't agree that Legends has a big amount of hype behind it at all, outside of Wii U owners and enthusiast gaming communities/forums.
Being a Wii U exclusive will dilute numbers purely in terms of hardware adoptation at this point. Being a Wii U exclusive sequel to a game that - while popular amongst those who played it - wasn't a seller until it hit budget price points will lower that number even further. And while there are some of those Origins players who will buy a Wii U for Legends, I think that's a tiny, tiny number in the grand scheme of things.
I don't know. Maybe it'll chart. Maybe by virtue of everything from number 10 down selling marginal numbers. But I can quite easily see a situation where it misses the top 40 entirely, and equally can see a situation where it places no higher than 30 if it does. I'd love to be wrong but I can't see it.