>>34180180When you shuffle a real deck, usually you split it in half and then layer the cards together, one on top of the other with maybe a couple exceptions. When the computer shuffles, it lays every single card out on the table then picks them up one at a time from random positions. It's two completely different methods and it does affect how the cards are randomized.
Though I'm also of the opinion that PTCGO is not actually random in the first place, which makes having an argument over it pointless.