Long tail keywords will rank better because they will be better at answering the search query.

For example. Think of the following keyword search phrases.

• Shoes
• Kids black running shoes with no laces.

You will never rank well with the “Shoes” Keyword because it is too broad and you will not be able to satisfy every visitor. (Unless you have every shoe imaginable).

However for “Kids black running shoes with no laces”, is much more specific and you would have a better chance to provide the right shoe for the customer.