There's really no point in talking about how bad these cards are, because they're simply meant for more casual players and their families to learn about the risk/reward of using GXs. I would imagine there's virtually no chance that these cards will ever make it outside of Japan (unless they're put into a similar type of product for casual players internationally).
...That said, I'm pretty sure Pinsir's three-energy for 160 GX attack with no added effect has to be, objectively speaking, the worst GX attack ever printed on a card. Might even be the overall worst GX ever printed, period. Quite hilarious tbh XD