Playing a low res video with a somewhat dark screen.... the absolute best case scenario for battery life.
This is just stupid, to boast the bigger unrealistic number.
How about a meaningful battery test with real life use case ?
Ex: Teams call with video, 75% brigthness, browser with 10 tabs opens, and other real software like visio, excel etc..
You'll be lucky if you manage 6 to 8 hours of battery.