Miliband a great original?

Ed Miliband nicked his opening joke from Tony Blair's speech to the Labour Party conference in 2006, almost word for word. Then Blair said:

"I know I look a lot older. That's what being leader of the Labour Party does to you. Actually, looking round some of you look a lot older."

This year Ed Miliband said:

"Since I was here 4 years ago, I feel wiser. I feel older. A lot older! But hang on, some of you lot look older too."

Is Ed Miliband lazy or his script writers?