Did Germany peak too early? They look out of sorts against Algeria.
To be frank, Algeria (like Chile), except for set pieces, is exactly the most difficult kind of opponent Germany can face. Good pressing, but get back behind the ball, and fast sharp counterattacking, with much better speed than Germany's high back line.
I would have favored both Germany and Algeria to beat the French; Brazil, should they get past Columbia, will not be anywhere as suffocating as Algeria was. Brazil still poses a counter threat, but won't defend or press as well as Algeria. I think both Brazil and Germany have faced their most difficult opponents in Chile and Algeria.