Argentina coach Alejandro Sabella believes a well-rested Germany will have an advantage against the weary South Americans in Sunday's World Cup final.

Sabella's players advanced to the Maracana showpiece after prevailing in a penalty shootout with the Netherlands that the Argentina coach described as "like a war."

The fact Germany has had an extra day's rest and effectively had its 7-1 win over Brazil wrapped up inside half an hour could be crucial, Sabella said.