A as much as B 或者 as much A as B. 为比较结构演变而来的准并列连词，连接二个相等的句子成分，意义相当于A and B equally. 即A和B在数量上或程度上是相等的。既A，又B

此时much为副词，在句中作程度状语。没有必要补全。一定要补全也是可以的，但过于繁琐。我补全如下，但不值得效仿，只是为了让你知道这个习语是怎么来的。

I  think you can find rich men and poor just as much in farming as (you can)     in any other occupation.

much为程度副词修饰介词短语in farming。从句可补全的you can中的can为操作词替代，替代can find rich men and poor。从句的空位为其后介词短语的程度状语，这个程度状语不可补全，必须省略。

As much as anyone he was a man of  his time.

= He was as much a man of his time as anyone was     a man of one's time.

much 为副词作程度状语（注意限定词much不能修饰可数名词），从句空位为程度状语的位置。

It is as much your responsibility as (it is)      mine.

much为程度副词作状语，从句空位为不可补全的程度状语。