For general compute they will lose to a laptop, but that isn't supposed to be their purpose. I think the best use cases require extra hardware that would make a laptop too bulky or awkward. For example a deck with a VNA, SDR, scope, and arbitrary waveform generator for field work with radio equipment. The traditional computer capabilities are sort of extra. Any sort of diagnostic "cart" with a dedicated computer and a bunch of test equipment could be a candidate for miniaturization.

> "For example a deck with a VNA, SDR, scope, and arbitrary waveform generator for field work with radio equipment."

Any real world examples? I don't think that's plausible from a RFI, power, heat, or just plain fragility perspective even with the cheapo hobbyist instruments suitable for kitbashing and only energizing a couple of instruments a time.

I'm imagining a computer set up for DJing with big-ass speakers on the outside top lid, and a bunch of analog controls on either side of the keyboard, and a heavy battery.