As you mentioned, you're comparing base, not boost clocks. The base clocks are calculated to assume all cores loaded and be within the TDP (with a fair bit of fudge factor, but close enough) over a length of time (IE it can boost higher for shorter workloads). These benchmarks only loads a single core, so the power "saved" from the other cores being idle can be used to boost the one loaded core higher, and the benchmarks aren't that long, allowing it to boost higher. So the results are pretty much "Best case" for the low powered chip SKUs (like the ones ending in "U")
i7-8565U boosts to 4.6ghz
i3-8350K clocks at 4.0ghz.
So a lot closer, and if the i7 in this device is somewhat power/thermally limited, it could explain why it might "average" 4.0ghz and come up with exactly the same result.
But that doesn't mean it'll be the same at running dolphin - as the workload is over a much longer period of time, and loads more than 1 core, so the results could diverge significantly - so be wary in using this to make purchasing decisions with dolphin in mind!
i7-8565U boosts to 4.6ghz
i3-8350K clocks at 4.0ghz.
So a lot closer, and if the i7 in this device is somewhat power/thermally limited, it could explain why it might "average" 4.0ghz and come up with exactly the same result.
But that doesn't mean it'll be the same at running dolphin - as the workload is over a much longer period of time, and loads more than 1 core, so the results could diverge significantly - so be wary in using this to make purchasing decisions with dolphin in mind!