And it does not matter how may top developers you have,

If there is no good BA (some developers may function as BA), you are not going to have a very successful IT project. 纲举目张，BA就是这个纲，it's called REQUIREMENT.

Just like if you do not have good architect, good developers alone may not deliver successful enterprise IT proejct/product.

To that sense, I will place good BA above good architect, for any serious enterprise program/project.