The first one is beyond sensationalism; the benchmark table is simply wrong. Despite the One coming in first.
In the second, he said he noticed that it got hot while benchmarking. Heating during benchmarking is expected to some degree. When someone questioned his iPhone bias in the comments, he got defensive and changed his remark to be more severe about temperature.
There are a host of apps that profile a running system and accurately report battery temperature. On any phone that's more than a fair indicator of the overall temperature. How hot is hot? He said, hot to the touch, but not too hot. Last I heard, we measured temperature in degrees.
GSAM Battery Monitor will give you a temperature graph for your battery time. It's the default graph. It's not rocket surgery to do reviews properly.
Maybe ask about heat in the user reviews thread.
None of these flapdoodles seem to know how to do a basic reporting job with all facts and figures, so I'm with you, let's hear from users what's up.