What's wrong with this picture?

Regarding this hacktacular WSJ editorial page graphic, Kevin Drum points out:

Just for laughs, take a look at what the Journal's barmy graph drawing implies: Norway, with a corporate tax rate of about 29%, generates enormous amounts of corporate tax revenue. But then, since it's the only way to get an upside-down U out of the data, the graph goes nearly vertical. Even the Journal's editorial writers, normally a pretty barefaced bunch, were apparently too embarrassed about this economic singularity to follow the right side of their graph to its logical conclusion, but we can: at a rate of about 33% corporate taxes produce no revenue at all. An increase of a mere four percentage points destroys tax revenue entirely! Mirabile dictu!

Not only that, but by following the Editors' advice and cutting the corporate tax rate from 33% to 29%, the US would miraculously increase the corporate tax revenue share of GDP by over 7 percentage points, six of which would be lost by further decreasing the corporate tax rate down to Ireland's level! Behold the potency of the Laffer Curve!

Unfortunately, the OECD data used for the graph costs money. But the only way to get the graph to look like it does is to assign an enormous (basically infinite) weight to Norway relative to all other countries (although the word "Norway" doesn't appear in the editorial). And there's something humourous about the notion of the WSJ editorial page rigging weights to highlight the primacy of Norwegian policy given that in 2005 Norway had the fourth highest overall tax share of GDP in the OECD.