it is bacuse of three spins granted >> 3 times chance
Read more carefully. I found a 13.67% chance to win a card on each spin, when it should've been 5% according to what I've heard. 3 times 13.67% is the 41% that I also mentioned for the chance to win a card after a match, or in 3 spins.
Actually math doesn't work like that. You cannot just add up the percentages.
Think about this. If I spin TWO times, and the possibility of winning a card with one spin is 50%, does that mean my chances of winning are 50%+50%=100%?
I was actually thinking about this after I posted. It seemed wrong, but I couldn't decide what was right. I always hated probabilities.
Anyway, isn't the chance to get at least 1 specific result out of a certain number of tests something like
p^1+p^2+...+p^n
where p is the probability of the result occurring and n is the number of tests? In which case, the chance of getting 1 heads in 2 flips of a coin would be 75% (.5^1+.5^2=.75)? Does that mean my percent chance of winning a card after a match with an elder is wrong? It seems like it should be straight forward (41 cards / 100 games), but if you think of it as 3 spins, you get a totally different number. I'm confused. Damn probabilities.
The way I understood it to work was the game randomly picked 5 cards from the deck to populate the spinner. If there are 5 different cards then the odds of a match are 5%. if there's 2 of one card, and 3 other cards then the odds go up. I could do the math but its too early in the morning 
Even if that's the case, you'll still have a more than 5% chance, so I feel like recording the rate could be useful. Of course, I may be just too bored.
Also, if you mean to say that you have a 1 in 5 chance of getting a certain card for each slot, that's much less than a 5% chance if all the cards are different.
From what I have seen the odds are decided by the number and quantity of cards in the deck. Deck with 29 A cards and 1 B card will almost always drop an A card and very rarely a B card. Are you sure that only 5 cards are picked for the slots? I think all deck is in there, thus mono and duo enemies drop more often than rainbow ones.
That's definitely true. I once played against a t50 deck with only qt and got 3 qp. I guess that means finding a drop rate isn't quite as useful since it all depends on the deck.
