Had Inter won in Germany, they would've finished as the group leaders, because Tottenham were held 3-3 by Twente.
"Evaluating the game in the heat of the moment is pointless," said Cambiasso after the final whistle.
"We must think about improving as a team and getting back the injured players.
"It's also important to remember we stepped on to the field aware that we were already qualified. Now we can focus on the Club World Cup.
"Qualifying in second place is not a drama. Last season we were runners-up and we know how that went."