It doesn't help that Avatar was announced in 2011 vs. Tokyo's plans being announced just about 2-3 years before completion.
That's what I mean though, people just haven't been really paying attention to this project and think it was "just announced":
-Internally imagineering were working on the Tokyo fantasyland expansion in Fall 2013 (at least that we know of when Carsland got thrown out).
-OLC actually made announcements about the project with their March 2014 annual report
-Height test balloons were up in June 2014
-Artwork was shown by OLC in October 2014 and now again in April 2015
-Construction may not begin until 2016
-The project will likely take 2.5-3 years from that point.
-If you go back to their 2014 announcement, they actually weren't even thinking about starting construction until 2017-2018, but that was seriously pushed up when they were caught off guard by stellar 30th anniversary number. Prior to that OLC thought the parks had hit maturity and were looking to invest mostly elsewhere.
Contrast that to Avatar, the only difference is they may have announced Avatar 6 months earlier and waited 1 year later to show artwork.
In my opinion I don't think either was mishandled, but it's funny that this gets a complete pass and Avatar was clearly mishandled when they actually both are taking 5 - 6 years from conception to opening. The exception being Frozen, which benefited from doing stellar numbers just when OLC was trying to finalize plans for an 8th port, it's definitely on an excellerated timeline.
I'm looking forward to all these projects very, very much by the way! The sheer number of dark rides coming our way in 2017-2019 is astounding.