Top myths in photography

Is this analogy accurate?

I thought that the better analogy would be to use marbles (for photons)

So that just for simplistic arguments sake, if only one photon entered an area of 4 wells only one well would capture it leaving three with nothing but noise (75% noise for that area?). But if a sensor with a larger well that covered that same area as the 4 smaller ones, it would capture the photon and have no noise?