I think the comparison of Rio and SP is fair
I think the replies were to someone who is new. What you are going to tell someone like that other than based on obvious facts and numbers. Sao Paulo also is a far much larger city.
Eventually, I think it is determined by the connection one made with the girls and the city. For me, Sao Paulo offers a better quality of life. More restaurants, more diverse, better infrastructures and more things to do at night.
I am kicking around small cities, the ones that has no airport, in the south right now. All the bus terminals that I have been to all point to Sao Paulo in big print as the center of the universe. LOL.
As for price, this is from a post dated 2011 from a smaller town too.
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Our bill is over 1200 R$. The exchange rate is 1. 2
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