While it is true that Speedometer is developed by Apple, it feels misguided to just throw in "of course it will be performant". Even Google Chrome scores higher in Speedometer in M1 (184, vs 88 when ran on an Intel Mac) -- so it's not like Apple is just underhandedly making its own software score higher. To be fair though, it's not like you can test other browser engines on an iPhone since they're all just basically Webkit web views.

Also it's worth noting that on Basemark Web 3.0, the iPhone 14 Pro Max scores 1033.56 while the formidable Galaxy Z Fold 4 running the SD 8+ Gen 1 scores only 641.02, so it doesn't appear like Speedometer is just fluffing numbers for Apple.

Additionally you can only test Safari/WebKit on iOS. And there is no Safari on non Apple platforms.

Is there any WebKit browser on Android or are they all based on Blink (apart from Firefox and its forks) ?