I kept track of every pull and have yet to pull my super rare after my 1000th GNW Treasure pull. What gives?

3/8 GNW pulls (300)

1st Haku Edo Tensei

2nd Zabuza Edo

9th Ameyuri Ringo

15th Kushimaru

25th Toroi

28th Mangetsu Hozuki

30th + 10 more used for 31st(none)

3/30 GNW pulls (300)

3rd Edo Sasori

9th Zetsu

15th Jinpachi

23rd Mangetsu Hozuki

29th Jinin Akebino

30th none

5/25 GNW pulls (300)

3rd Edo Sasori

10th Zetsu

16th Ameyuri Ringo

21st Jinin Akebino

29th Kushimaru

30th none

6/9 GNW pulls (last 100 for super rare + 10… + 10… nothing)

4th edo hashi

6th Sasori

11th Jinin

12th nothing