>>3046909No, bigger pixels != better low light performance.
It used to be more of a factor when the pitch in between pixel sites was much larger, leading to wasted space with higher mp counts, leading to a loss in sensitivity.
The sony a7rii has better low light performance than the a7, which has better low light performance than the a7s, this is because you can resample the larger shots and take an average from a group of pixels, giving usually more accurate results.