The HTC One (M8) and the Samsung Galaxy S5, both have the Snapdragon 801 under the hood, with the Adreno 330 GPU, and both are pretty much neck and neck with their AnTuTu scores in the 35,000-36,000 range. Back in April, the Vivo XShot became the first handset to top 40,000 on the AnTuTu site. That phone is also powered by a quad-core Snapdragon 801 CPU. With a quad-core 2.5GHz Snapdragon 805 powering the Galaxy S5 LTE-A, you probably would expect to see that device top 40,000 on a consistent basis.
Consumers should use the AnTuTu benchmark scores at their own risk. Various factors determine the score, including CPU/GPU, RAM, User Experience and I/O performance. The temperature of the device at the time you take the test, can also play a part in your final tally. As a result, while the AnTuTu score can be fun to argue about with your friends (assuming you have friends that are in to smartphones as much as you are), there are just too many factors that can determine where a particular phone scores.
Thanks for the tip!