If the Obama Administration won't do anything about it, it's highly unlikely any other nation would. Hence, the reason I prefaced my response with "worse case". Frankly, I highly doubt any other nation would dare touch this issue for two reasons:
1) Such information was already made public years ago. The only difference here is the details as to how helpful torture was to intelligence gather. From the looks of it, not very.
2) Most nations would consider beheadings to be far worse than any act of torture (mainly because it's their people - Europeans as well as Americans - who are being beheaded).
The only nations that might get in an uproar over this are the Saudis and the UAE and their hands are so clean here either. Nonetheless, if people across the world start complaining loud enough condemning America for our torturous deeds especially if world leaders take this up to the U.N., we might see some pressure to do something about this besides publishing a torture report.