This is the actual source http://europa.eu/rapid/press-release_IP-17-3701_en.htm

And it says

> The tax ruling enabled Amazon to shift the vast majority of its profits from an Amazon group company that is subject to tax in Luxembourg (Amazon EU) to a company which is not subject to tax (Amazon Europe Holding Technologies) [...] the level of the royalty payments, endorsed by the tax ruling, was inflated and did not reflect economic reality.

IANAL, but I am not sure why you interpret this as different from Apple's. They both depend on the arbitrariness and non-generality of a company-specific tax ruling.