Superfight- genuine typos or possible fake?

Hi everyone, bit of a different one but i’m hoping somebody can offer some input. I recently decided to have a small cull of my collection, and one of the games to go was superfight. I listed it on eBay and it just arrived, but the guy’s found 6 cards that have typos?

I’ve played the game a good few times, and i or anyone else has ever noticed. I also don’t think i got it from anywhere that fakes would easily circulate either (i think it was zatu but can’t be certain).

I’m obviously going to refund the buyer once he’s sent it back and i’ll have a proper look myself, but i guess i’m just wondering if the game actually has typos i never noticed or if i could genuinely have an unofficial game somehow?