"SR Guranteed" is something like 1 ticket per month (login bonus) or so, and there is no actual guarantee you'll get an SR card from it, since there are alot of non SR cards there, and only one in the deck is always SR. And even if you'll get a lucky pick or use a Card Reveal item (which are quite rare, too) and get an SR card, there is still no guarantee that it will be a new one, and not one you already have. The only "Guaranteed" gacha in PPS is R gacha, where all 6 cards are always Rs (and, sometimes, 5 R 1 SR). Other Gachas are pretty much the same as N Gacha, only with diferent list of available cards and drop rates, imo. Going this way, they could've just sell the cards for real money from the very beginning. (since, no one will be able to collect all teh cards in teh game, and even if i'd like to get some particular card, i can't be sure that i'll get it even if i'll pay to, say, buy some E-Gacha tickets and Card Reveals (i can just get a bunch of other random cards, including N cards available in the N gacha and waste my money this way)