The Pong game has one distinct difference from the genuine article - the game starts when either player touches the control, instead of going off automatically due to an invisible timer. That's actually the rule in sumo wrestling - more evidence that this version of Pong was developed in Equestria's version of Japan, which makes a funny kind of sense.
Also, additionally, compared to original Pong consoles or home units, which used a dial control for paddle control, the unit has a control appropriate for a hoof (a large slider button that can go up or down).
Also worth noting, Button's Mom was apparently expecting Button to play a two-player game on his own - but look at the game's response when Button touches the left-side paddle. The right-side gets automatically designated as the AI opponent.