>>3977502exposure time isn't total gain or noise
>>3977511>200mp ff worse than 10mp mft in low lightper photosite, sure, as a total photo, no, once you resize the 200mp down to 10mp, then it will have around 2 stops better low light performance all else equal.
we view photos, not pixels.
You can verify this for yourself by looking at dpreviews sensor comparison. as you can see ff is much better than mft, and in fact the higher mp count ff and mft cameras come out slightly ahead of their low resolution counterparts, as sampling is just as good as photosite size.
