People can say what they want about triple stacked or quad stacked not mattering. But when it comes to POKEBALLS, exclusively, I do believe it matters.
I think he just makes a quality product, and sometimes the beans come out larger or smaller then others. Because I have rolled off of the exact pill you are talking about WHITE DC STAR two seperate occassions a month a part, and the first time they were thicker (like triple size) and I rolled balls.
Next month I got some beans, same stamp looked the same, but maybe a 1/3 smaller in width, and I didnt roll nearly as hard (tho still clean) I then picked up a blue lacost pokeball that same night which was much thicker then the white dc i had taken and I rolled nuts.
I think pokeballs are great quality and the size difference just means the amount of batch inside it, so if I were you and got those big ones I would gobble gobble gobble