From the sample of all 3 cullets You will notice that the blue cullet has a rectangular shape that is closest to a square. This gives more diamond diameter than other culates.
Among all three cubes, you can notice that the blue cube is the closest square to the square. This makes the diameter of diamonds larger than any other array.
It can be observed from these three examples of Que Park Jung Su that the characteristic of Lan Kui Park Jung Su is the closest to the square, which can get the Guinness Degree better than other Que Park Jung Su.