请教大虾OG题库中得一道AA;多谢！

The following is part of a business created by the management of the Megamart grocery store.

"Our total sales have increased this year by 20 percent since we added a pharmacy wection to our grocery store. Clearly, the customer's main concern is the convenience afforded by one-stop shopping. The surest way to increase our profits over the next couple of years, therefore, is to add a clothing department along with an automotive supplies and repair shop. We should also plan to continue adding new departments and services, such as a restaurant and a garden shop, in subsequent years. Being the only store in the area that offers such a range of services will give us a competitive advantage over other store." Discuss how well reasoned.

I think there are two main points; one is the fallacy of casual oversimplification; the other is false analogy or hasty gerneralization. but i am a little confused about the diffience of false analogy and hasty gernalization. is anyone have good advices?