this is not exclusive to Connecting Threads fabric. you'll find the same characteristics in a variety of brands, from discount priced through the most expensive.
methods for producing different prints vary widely. you might even find fabrics from the same manufacturer that were printed using different methods.
like everything else, each customer is going to like some of the results and be ... shall we say ... less than thrilled with others.
it's one of the many reasons many people insist on buying their fabrics in person.
i buy most of my fabs online. needless to say, i have often been ... hmmmmm .... surprised when i opened the boxes.