Areym on 10 April 2017
There's a lot of factors as to why but I am surprised to see the Wii U sales for BotW be so low. For as big as Zelda is, it's still a title on a brand new console against one on an existing console with a giant userbase. If the Switch keeps selling strongly, we could see Zelda pass HZD at some point, specially if we see Nintendo bundle Zelda with Switch (although I'm not sure how much bundling Nintendo does, Sony certainly love some bundles)
"Trick shot? The trick is NOT to get shot." - Lucian
