What is the difference between Manual scenario and Goal-oriented scenario?

What is the difference between Manual scenario and Goal-oriented scenario?In Manual scenario, load test will be managed by number of vusers that are assigned to the test. In Manual scenario the numbers of vusers are distributed among vuser scripts depending upon the settings we made in load generators percentage.In Goal-Oriented scenario, the controller will create a scenario based on the goals we specify. In goal oriented scenario the goal will be automatically created by controller based on number of transactions per sec, number of hits per sec.