The two images shown are certainly diametrically oposites. I find nothing exceptional about the iceberg except the subject matter.
The train station photograph is quite something else, and must be seen in a major enlargement to be fully appreciated (as his gold mine images are, also).
I had the great priviledge of attending a major show of his work last year, and although I was almost open-mouthed at the images, I don't feel that the printing is all that great. Competent, yes, but not more.
While my own opinion is to agree that he is one of the world's greatest photographers, only time will tell if that is so.
As to his apparent prime motivation being financial, remember that he started life as an economist. And unlike Gene Smith, his family will not go hungery when he pawns his cameras to pay for booze and drugs.