I have to say nunes after going back and forth quite a bit. Not confident, but I think she is the more well rounded fighter. I also think she is more athletic and quicker, and I think she probably improved more than Valentina has since their last fight.
Her cardio is the only reason I'm not more confident, and it's probably one of the main reasons people are picking Valentina.
I predict a slower fight than the first with nunes taking the first three. Valentina takes it to a tired nunes in the 4th and 5th. Nunes squeaks the dec. But maybe Valentina can get a 10-8 round, so it's a good fight to bet the draw.