Ours starts with the Preamble, the Soviet one in the link has none. But has plenty other discrepancies at first blink, these however chiefly comes from the fact that the Soviet Union was a differently organized state with subordinated Republics and Autonomous Republics, in fact the II. Chapter is this, the list of these states. And this type of organization leads to the redundancy in chapters. Therefore:
Su I. = Hun I. and II. - these two were divided for some reason maybe just for creating new Chapters because in themselves they are fairly short, especially the firs one.
Su II. - contains the reason for the following couple of chapters
Su III. and IV. and VII. = Hun III.
Su V. and VI. = Hun IV.
Su VIII. = Hun V.
Su IX. = Hun VI. and VII. - again maybe to generate more chapters, so their number can go beyond X, making it more similar to the other.
Su X. = Hun VIII.
Su XI. = Hun IX.
Su XII. = Hun X.
Su XIII. - this isn't equal to Hun XI., these measures are tucked among the laws in the case of ours and didn't get their own chapter. The Hun XI. Chapter is some lines about the Constitution itself, definition, scope, when and how it comes to effect, this sorta thing.
To be honest when translated the chapters I could have copypasted more titles but even like this we can see they are the same.