I'm not very sold on this photo. It has a weird bit of artifacting on his lips and face and forehead.Just not feeling this one. As far as artifical lighting and natural lighting, yes, the two things are very different. One comes from the sun; the other requires electricity to generate. Kind of like arguing that RAIN and water from a pressure washer are one and the same thing: "rain".
do you water your plants using the hose and city water or do you use "natural water"?
Well, to be a bit pedantic, city water is missing the minerals present in rain water but is possessed by multiple chemical additives. Both differences being artifacts from the filtration/treatment process and both differences making city water less than ideal (but not "bad") for plant care in comparison to "natural" water that has been included recently in the natural water cycle... unless you have a significant pollution problem in your area. And then there's cases like Flint Michigan (and a few others now) where levels of dangerous lead and other toxins were heavily tainting the city water making it not only less than ideal, but wholly damaging.
Lead has been a big problem in many older cities, too, by the way... in many older cities on the coasts it is suggested you get the soil tested for high lead content and have it taken care of before planting a garden as it has been found the use of certain building materials (and the fill it became when building new neighborhoods) and the use of leaded gasoline in the past has made the soil toxic in these really old neighborhoods. Eating vegetables from a garden growing in this tainted soil can lead to lead poisoning or other maladies dependent on the toxins that got dumped there.
I'd take my "natural" rain water any day... and make sure my plants are in raised planter boxes away from the stupidities of the past. Because there really is a difference.