They do not claim that. They do claim that they store specifically encryption keys in several data centers in different jurisdictions. Here is the exact quote: "All data is stored heavily encrypted and the encryption keys in each case are stored in several other data centers in different jurisdictions". So only keys are distributed.
What does heavily encrypted even mean? Fully encrypted? Slightly encrypted? Encrypted enough to call it “heavily encrypted” but not enough to be protected from whoever is interested?