Still I get the feeling that if I take an illiterate but "wise" peasant and show him photos of August Sander and Becher he will pick the first for sure.
Find me an illiterate but wise peasant on Photrio and we'll try it.
So, these photographs worked together for you. As a show.
Yes, because I was at a show in which there were many photographs put together

.
And not each one individually.
The point of a show in which there are many photographs put together is not to appreciate one in particular.
If I tell you to pick your 10 favourite photos of Becher could you pick? Or would they all look the same as I would imagine they are?
What you imagine is both irrelevant to me and to the Becher's work — not "Becher", there were two of them, Bernd and Hilla.
Moreover, you're totally missing the point. The idea that all photographs of, say, water towers all look the same is not because all the photographs look the same but because all water towers — no matter where you are, no matter which country — look the same. Same with blast furnaces, same with coal bunkers, same with gas tanks.
Look the same, or seemingly so. That's actually what seeing the photos as a set tells you. That they are
not "all the same". They are the same in function, but each has its own personality — some are dignified, some are comical, some grotesque, some endearing in a weird way, some lonely —, each reveal some man-made ingenuity — and the Becher's and our astonishment that somewhere, sometime, people thought that such a thing might be necessary, and thought about how to build it and acutally did build it —, and, although you don't always see much context around them, you get a sense that each sits within the vernacular landscape in its own way, even though they are sign posts all signifying the same thing.
They are also all symbols of our industrial past and, at times, of our industrial present — there is something grandiose in their ingenuity, yet something terrifying in the burden of human error they carry (just look at the houses right under the industrial complex at Terre Rouge, Esch-surAlzette, Luxembourg!).
You sense those which no longer live but have lived, have been the center, the life of communities. The photographs are a witness of these buildings as witness.
And I should add that as photographs they are absolutely superb. There is immense craftsmanship that went through each of them. I didn't notice the prints as being flat, as
@Arthurwg did, but I can see one getting that impression. I do think that the lack of contrast is, in a way, part of it. But when you look carfefully — I am going though the exhibition catalog as I am writing this — you see light emanating from the objects rather than falling on them, and a really beautiful tonal range in the middle zones.
I would have come up with one or two photographs and prints of this quality and I would have been proud. To put such a huge series of such high quality, from the framing to the actual print, is simply amazing and deserves praise.