Seems a little odd, the way they rank gloves.
The further down the list you go, the higher the score. But use the Joe Rocket SpeedMaster gloves for an example of odd ranking. It has a high score but the palm strength is only 2\10? Durrr.
That is actually what makes this interesting. The winner shows overall quality in ALL areas. That means they do not assume that accidents will happen one way, and they also don't skimp on their gloves regardless of the sections. Remember, leather gear is made up of panels, you can compromise safety by compromizing quality elsewhere.
This report allows you to read between the lines. Where one might have Un-Obtanium material on the Knuckles does not mean it is the same in the entire glove.
To be fair to JR, I decided to go check out the glove that was tested. Firstly, most of the shots of these gloves are always shot from the top... rarely the bottom or palm area. Then I started to assess the design. Now, this is just my opinion and strictly mine alone:
The palm seems a bit busy with a lot of the stitching exposed. Considering JR products are often criticized for weak joint, I would imagine that those stitches in the palm failed. Again, when you look closely at the data and the test parameters, the JR scored low on the seam strength. There is also little to no padding for the palm area, that means on impact, not only would you feel the impact, there is little to act as a cushion between your hands pressure to the tarmac and the material left to protect you..... I would imagine higher friction rates would occur, again leading to earlier failure of that are. JR claims to use Pittards® Ceramic infused leather Armor Tan™ palm - I have no idea what that means. But... if I were to infer what from what I know about SIDI boots and their ceramic toe sliders, it would mean rougher edge, again again, increased friction.
Here is a pic: