I have some server CPUs laying around that can also beat Apple CPUs. But putting them in a compact, densely packed, sealed box (aka a phone) would result in a fireball and almost no battery life.
In multicore, sure. In most single threaded workloads as well? That'd be interesting enough on its own, regardless of wattage (though that'd make it even more interesting), as my A19 device gives my overclocked 9800X3D a run for its money (and some losses) in single threaded workloads. Considering that's the only thing the 9800X3D is really targeting, it's impressive beyond just whether or not it does so with less power.
Their next Fold phone (TBA September) will use O3. I guess we will find out very soon.
See this video from chineese youtubeer geerkerwan: