BTW ama dumbas.
I was making normal map for unity, so i can use baked normal map instead of edgy imported or calculated normals in unity.
To do so, i need: under Influence use Object Space instead of Tangent. I believe it was unclear for me because i love to learn myself(though it is not effective) and my english is not too good. Tangent doesn't bake "global" normals of mesh, it bakes some little holes and small details on surfaces, that already have calculated normals from other source. So, Tangent must be used in tandem with already known normals. In my case, i wanted complete normal map to use it instead of normals that comes with .obj. I should have used Object Space, it calculates both small details and "global" angles of faces.
And, adjust RGB under influence, for Unity it is -X, +Z, +Y.
Hope it helps.
Aaaaand, my results, imported(.obj) normals vs Object Space baked normals(absolutely same material settings):