The strength of coffee can vary quite a bit between brands, the trouble is, you have no way to compare them until you bring them home.
Considering the vast variety of coffees on the market, you would think there would be at least some standards to determine the relative strengths between them.
For example, why not create a standard scale from 1 to 10 for characteristics such as bitterness, acidity, and caffeine? That would be an awful lot easier than just reading a vague description that says something like "Full body aroma and rich taste".