I would describe it this way. In the current setting, in our group we have 12 radiologists. Each of those 12 radiologists is entitled to take advantage of the small business deduction, and there's not an additional deduction for each of those radiologists. Should the legislation go through, the partnership would be dissolved and each of those 12 radiologists would be allowed to take advantage of the small business deduction.
That doesn't directly answer your question, but my understanding of multiplication is that there are certain partnership structures that allow for individuals to effectively take advantage of that low tax rate for small business multiple times, rather than just one for that individual.