The name of the tool is "Recommender". It does not claim that a racquet will be of your liking, only that it qualifies as a possibility given your preferences. The racquets that are recommended will not all be similar, unless you have moved the sliders into narrow ranges to make them so. Outlier racquets are possible at the very top and bottom of the sliders. You can eliminate those from your choices by moving both the top and bottom sliders. Most racquets don’t live at the extremes. It is recommended that you don’t move the sliders to far from the green line representing your current racquet. That way you still have the outliers in your selection but then you have more freedom in optimizing your selection with the other sliders.
The terms like "hittingweight" and "sweet zone" are all defined on the results page if you click on "explanations" in the upper left corner. Also, the "instructions" link in the right corner has some helpful information. There are also separate
hittingweight and
sweet zone tools on
TWU, as well as many others. The most powerful tool of all is the
“Racquet Performance Analysis Tool”. That tool alone tells you how every racquet behaves for power, power zone, swing speed, spin, plow through, show speed, launch angle, shot distance, and flight time. It also allows filtering by brand, spec, impact location, and swing effort. It also finds similar racquets and shows the effects of customization. All in one tool!