Re:NYC's brand new subway is the most expensive in the world
by herval on Sunday January 01, 2017 @08:09PM
(#13298419)
The answer to your Tokyo question is in the "compendium of international subway projects", linked in the article (which also contains those numbers you quoted)
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Re:NYC's brand new subway is the most expensive in the world
by jessriedel on Sunday January 01, 2017 @08:42PM
(#13298523)
Why not just answer his question and link to it?