I give it a 1 just because it clearly shows that this flashback is a retcon and it ended up not answering the questions I had (why did Bonney escape give shills to Akainu? Why was BB so sure that she was worth a battleship and the WG would prefer to trade instead of just killing her and collecting the bounty? etc).
Overall, for a retcon made to make Nika shine it was ok. I'm happy it's over.