Benitez was speaking after their victory over Palermo, where Milito missed numerous opportunities. It's the first time he has gone the first five official games of the season without finding the net.
"I think he had a fantastic game and did everything he had to do as a striker. He was just missing the goal," said the former Liverpool manager.
"I spoke to him afterwards and had the same situation with Crouch at Liverpool. I have no doubt that Milito will score many goals, starting from the next game.
"Tactically, Serie A is pretty much what I expected. The other teams all know what they have to do and there are many talented Coaches."