Yes, someone needs to explain how that's worth a card, does he not have the right to clear the ball? Contact was incidental on the follow through. On most tackles when you get the ball first, it's at worst just a foul.
That said, it evens out since Lopez did get away with the headbutt. I just think the Araujo red was extremely excessive and a shame to seal Peru's fate in this tournament with.
Now all that's left is to watch the big names of this generation (Guerrero, Cueva, Carrillo, etc.) make their last appearances for the selección in a competitive tournament in the final game with Argentina. Then again, if they continue to fail to develop anybody at all who can play forward, maybe Guerrero comes back at age 44 for the next Copa after all.