Hmmm, I think I miscalculate the superko, indeed. Indeed there is no way to win the ko, since under situational superko the ko can never be resolved, and under positional the first player to take will lose their group.
We start at position 1:
Black takes:
White takes:
Black is forced to pass under any ruleset:
White takes again:
Under positional superko, Black cannot take A, since it repeats position 1.
Under situational superko, Black is allowed to take A, since position 1 has Black to move, and if Black plays A, it would be White to move instead.
But now, White cannot take due to normal ko rules, and after White passes, Black cannot take B due to superko (repeating situation 2)