https://www.cnet.com/news/huawei-caught-cheating-on-benchmark-test-says-it-was-just-ai/

Benchmark tests can give us an idea of how fast a phone performs, but not when that phone cheats to get a higher score.

Underwriters Laboratories (UL), the creators of the 3DMark benchmark test, have accused Huawei of cheating on its tests. To catch Huawei, UL ran certain Huawei phones through two different benchmark tests. The first test was the publicly available 3DMark benchmark, and the second was an identical but private version of 3DMark. UL found that results for these tests varied dramatically.