Weber assumes that the reader understands early 20th century debates about Marx in particular. Weber is asserting that understanding economics and the distribution of goods is not enough to understand class or social situation, as Marx claimed. I want to go through each of the ten sections of Weber's article. The result is a somewhat disjointed article in which he goes through issues which do not fit well together. The social and economic orders are related, but not identical.
Economic order is about how goods and services are distributed and used.
Power is about the ability of someone to realize their will, even though others oppose. This may be grounded in economic power, but is not necessarily. Holding them together is a common legal order, as represented by the state, but again the two are components of the legal order, and not identical. Much social power, but little economic power. Colombian drug lords have much economic power in some places, but little social power.