It's just one store chain. It might be a different scenario on other stores. Also, it might be that Zelda increased due to Switch sales rather than MH suddenly dropping like a rock.
MH was able to hold prettyour decent lying so far indeed
Going with initial sales on both famitsu an dengeki it is already over 1.5 millions and probably will continge selling past golden week as the main 3ds attraction
Yes its 2 millions forecast wasn't achieved but for being a G version of a spinoff will do good enough imho