I mean those rates are awesome and all but I really wish those rates were the real one. It's still so hard to get As or even Bs ranks.
Sorry you are having bad luck. RNG can be cruel. I got 5 S rank on items which was about 1 per 100 attempts so my luck was quite good this round.
I had at least 4 S-rank and quite a few A-rank options this event. Last one was with, like, 35 tries available due to 20 ores from the roulette and best drop from the daily lucky box.
you guys got really lucky!