The IPhone runs on a battery, with no active cooling.
There is no chance the sustained single core perf is better than a 150=200+w ryzen with a big noctua cooler on it. The power draw alone would kill the battery in a few minutes(?), and the heat would make it catch fire. lol
I don't think you are correct for single-core performance.
A20 Pro scores around 4725 at 8.9w. Geekerwan's review showed that the iPhone 18 pro could dissipate as much as 6.4w during long gaming tests. Cutting power by 50% likely still keeps around 80% of the clockspeed.
As 9950x scores around 3400-3450 in geekbench, or around 28% slower.
There's a very good chance that the iPhone single thread performance is genuinely faster even during sustained loads.
Sustained performance is usually based on cooling, not the chip. There is no reason the iPhone chip can't sustain its performance if you give it a small fan.
So whatever your argument is, it doesn't make much sense.
The M6 is based on A20 Pro and it sustains its performance in a Mac Mini indefinitely - likely longer than Ryzens.
The 9800X3D doesn't pull anywhere near that much in single threaded workloads, it'd fry the core. It's also way less efficient than the iPhone CPU design and on an older and less efficient semiconductor process from TSMC.
If you compare like for like, ie. take the process node out of the picture, then you need to compare the Ryzen 9000 series to the A16, as both use TSMC's 4NP process.
The x86 folks lost the ball completely. For workstation/ mobile needs you go to arm. For matmul at scale you go to gpus.
I guess windows gaming with separate gpu is the only remaining market for them.
Unless Nvidia releases a motherboard with an arm cpu on top of their RTX cards, and then that market is gone too.