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Maya's addition is great. It doesn't detract from the central point: tax havens are the issue, rather than competition between high-tax jurisdictions. I was trying to detail that distinction in 240 characters. Failing clearly! Interested readers can consult the blog/ paper
I know that is what paper & blogpost says. I think its the least convincing part. Can also argue shifting of non location specific profits is protective against tax competition, since it relieves pressure between high tax jurisdictions to use 
tax rate to attract investment
i.e. with the implication that to the extent that BEPS changes effectively prevent this, there will be *more* competitive pressure on tax rates between jurisdictions...... and potentially a push for wider changes to the international tax system.
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