Originally Posted by
Kureru
We can't be sure of that without knowing how the gacha works. 10 pull guarantees an SR or higher, and you can pull 9 R and 1 SSR. Now it's possible that the SR chance is just increased for one of the rolls, in which case the SSR chance is the same. But it's also possible that the game rerolls if there are 10 rares, in which case the SSR chance is higher.