Where was Vivi in the fighting strength lineup at Arabasta? And Robin?

I don't see how she could be more durable than Usopp. But in terms of overall fighting power, she must have been ahead of him. Was she ahead of Nami and Chopper?

And was Robin/Miss All Sunday quite high up? She was Crocodile's Baroque Works partner primarily because of her knowledge of the poneglyphs and her WG wanted status, not because of her power. He wouldn't have wanted the reader of the poneglyphs to be away from him. But it could be her power matched her status, putting her ahead of all the female officer agents or maybe even above Mr 2 and Mr 1.
Was she stronger than Chopper and Nami? Was she stronger than Sanji or Zoro? That might sound ridiculous, but Zoro and Sanji could just have faster progress as fighters post-Arabasta.

Anyone else always associate "Miss All Sunday" with ice cream?

Robin can snap someone's neck when she's far away from them so it's hard to rank someone like that low.

I can see Robin being able to beat Zoro in Alabasta due to her devil fruit. It would be interesting to see how she would fare against Mr 1 seeing that his body is a blade. She absolutely destroyed that fat ass in Skypiea when she was serious.

I have no idea about Vivi. I can see her being below even Usopp.