That's the EU's interpretation of the figures, but that's assuming Ireland should have taxed all revenue across all of Europe. The Irish tax system doesn't work

That's the EU's interpretation of the figures, but that's assuming Ireland should have taxed all revenue across all of Europe. The Irish tax system doesn't work that way though and the Irish government is stating flat out that there were no special deals: the apparently "low" rate is because the EU isn't calculating taxable income the same way Ireland does.