In Yu-Gi-Oh! Legacy of the Duelist: Link Evolution I've found that, after a set number of wins and losses each, you stop getting cards for rewards in the Story duels. Before the cut off point, you get cards and points for booster packs as rewards, ones for winning, and ones for losing, both separately... I think. I don't think they're combined. It'd suck if it was combined, because you only get 1 card when you lose and at least 3 if you win, so maybe I'm just hoping you have to lose a certain number of times and win a certain number of times, separately. I just played out the very first Tutorial in the original series' stories. It took a lot of wins, since it's a tutorial it's literally impossible to lose though, so I can't get cards for losing that one. The cards themselves seem to vary as far as the rewards, but mostly cards that the opponent had in their deck, if I'm not mistaken. You are able to swap the duelists though, so you can play as each of the duelists in the story duel. The dialog remains the same though, but it's a neat feature to try to get different cards for each, separate cut off points for each character's rewards though. So that's awesome. I still don't have absolutely all of the Harpie Lady cards, since there's something called a Challenge where you have to duel a real expert Mai with a badass deck, and I just don't have the cards to do that just yet. Maybe soon, but not yet.