Where a saddle is made or how much it costs has no bearing on comfort. It doesn't mean that a similar-sized saddle of a different design won't work for you or a $30 model made in China won't turn out to be perfect.
Saddle width is only one of several considerations. The curvature of the saddle, both across the sitting area and along its length, is extremely important. The overall shape when viewed from above varies dramatically, from nearly triangular to more T-shaped and has a huge effect on comfort. The width of the nose matters. The amount of flex in the shell and the amount of padding are both critical elements. A central groove or cutout can also make a big difference.
I don't know how much you ride, but if you're new to cycling, keep in mind that no saddle is likely to be immediately comfortable, since you're sitting on bones and tissue that don't normally experience the same level of pressure that they do when riding. Some degree of saddle soreness is inevitable until your body adapts.
Unfortunately, there's really no way to tell what's going to work without trying a few saddles. If you're confident that the width measurement was done properly, stick with that and try more saddles of similar width, but different designs. Many manufacturers and shops have test programs that allow you to try a saddle and exchange it toward another if it doesn't work for you.
Over the years, I've learned that I need a relatively narrow saddle with narrow nose, an abrupt transition from the nose to the sitting area, a firm shell with moderate padding, and a groove or cutout down the center. For many other riders, this may be exactly the wrong design. That's why there are so many options on the market.
Don't give up! You will eventually find what you need.