How was performance measured? By how fast they open apps?
Hennessy Venom GT has the highest top speed, McLaren has the highest acceleration rate... what you're measuring is just acceleration. Doesn't make it the better performing device if all you did was open apps...
You didn't test its endurance at those speeds, you didn't test its ability to corner and handle high speeds and maxed output (which, if I may note, apple devices are known to struggle through thermal throttling for- hence Genshin Impact being used to test how long devices can be put through graphic torture at high Temps, and being realistic... iphones are not what people use to game on for mobile. At all.)
Using limited tests to draw conclusions deduces incomplete results.