So the first line in this table has a header called “Important Features,” and under that header (in the same column - in the boxes below) you will see the most important features, or characteristics, listed alphabetically, from A to Z.

Hannah says that, unfortunately, the Vision Corporation product has only one of the three most sought-after features.

If something is “sought (sought) -after,” it is desired, or wanted; it's something people are looking for.

“Sought” is the past participle of the verb “to seek” (seek), which means to look for, to try to find.
The people in the focus groups told Hannah that the three things they most wanted in a product, and Vision Corporation's product has only one of those things.

Hannah says that this may be one important reason why customers aren't buying Vision Corporation's products.

Hannah then asks people to look at the bar chart, which shows how the product's features, or characteristics, stack up against those of the competitors.

The expression to “stack (stack) up against” something means to compare with something.

You might want to know how your salary (the money that the company gives you) stacks up against the money that your colleagues (or coworkers) get.

You want to know how it compares to their salary.

Hannah's bar chart compares Vision Corporation's product with the products offered by the competitors.

She shows how they “stack up” against the competitors - how they compare to them.

Hannah says that Vision Corporation's product has good affordability, or price, but that this isn't very important to customers.

That's why Hannah recommends, or suggests, that the company raise, or increase, its price and use the extra revenue, or money, to create a product that has more of the features that customers are looking for - the sought after features.