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Brazil are far ahead of everyone, Argentina might match them (even though Brazil beat them by 10 and 16 previously), the rest of them stand no chance. Chile came here with a mix of juniors and cadets, and the game yesterday showed they're weaker than two years ago when they lost to Brazil 37-18. USA outplayed them completely, and they would've lost by 10-15 if Chile didn't start playing wild defense at one point. When the Americans finally adapted to it, they started increasing their lead again, winning 31-24 in the end.
That kind of thing won't do against Brazil. They're much better technically, and are playing aggressive defense, stealing a lot and crushing opponents like these. That's why they beat USA by 28.
Brazil crushed Ecuador, Venezuela, Columbia two years ago, even worse than Chile.
For Chile, this is a second game in two days. They can't get the second place, they're going to the quarterfinal, and it makes sense that the leading players will be spared for that. Their bench is pretty weak, with lots of cadets. That quarterfinal game will be the most important in their minds, so they won't care what the difference is here, 30 or 40. Brazil will get placed to the semis directly, they're free tomorrow, and they proved already that rotations don't influence their game or results in competition like this. I see this ending with the difference of 25-30 or even more.