Why Edison made "the internal resistence much smaller than the external load rather than having equal internal and external resistence" in his generators (Jonnes 62)

Majority of electrical experts thought that generators worked best when its internal electrical resistance matched the external resistance of the circuit. Generators with equal internal and external resistance generated maximum current, but Edison had considered the economic efficiency of the system to be related to the number of lamps per horsepower, and determined that a generators with small internal resistance would produce more efficient power.
Edison's superior dynamo had it's "armature between the poles of a powerful, oversized magnet . . . concentrated source of Faraday's lines of magnetic force."