Can you show me where they state that one core or more cores should be turning off as I quoted the article you can do the same.
Also can you show me where Anandtech states be careful of the S4 Snapdragon benchmarks because they specifically state that about the Octocore as I quoted.
The S4 Snapdragon has a published speed of 1.9ghz. If they were going 2.1ghz on that test, I think Anandtech would have called that cheating like they did with the Octocore version.
Also the person who originally found this info, stated that the issue is the GPU on the Octo version being overclocked. There is no overclocking on the Snapdragon version in any form.
There are also several articles stating the same thing, it is the Octocore version, don't you think they would be stating both versions of the phone if the Snapdragon version was caught cheating.