I'd imagine the Dylos will have better components and better calibration, so should provide superior accuracy.
Not convinced they're all that different though - both laser based particle counters, and results correlate pretty well in studies [0].
Certainly wouldn't trust a cheap SDS011 sensor for anything that really matters, but wouldn't characterize it as nutritional label vs blood screen either.
[0] https://www.researchgate.net/publication/337399372_Dynamical...
> raw counts every second. There is no smoothing, no translation to PM2.5 scale.
Slightly confused as to what you mean by this. Particle measurements via laser are by necessity over time and thus smoothed. I guess you could look at raw counts in a given time, but people use per millions because its more meaningful...else you'd need to consider fan speed to make it comparable and manually adjust air pressure/temp yourself.