"You need to remember that Dutch players coming to England with great quality have always needed time," said Benitez.
"Robin van Persie was like that and Dennis Bergkamp also needed time. The leagues are totally different.
"The Dutch league is very technical and you have two or three teams that are very good.
"Every game is about getting the ball, keeping the ball and playing nice football.
"Here it is harder, though Babel has played some fantastic games for us."