Gabby Agbonlahor, Libor Kozak and Fabian Delph struck in the win.
Lambert said: "The first goal was first-class from Gabby. He showed great composure and it was a great finish. When he's like that - with his speed - no-one is catching him.
"I thought it was truly fabulous. It was stunning. That's what Gabby can give you when he's bang at it.
"Libor scored the second with a really good header.
"And what a strike from Fabian Delph! It was a world-class strike.
"I saw it again after the match and it was better that I first thought it was.
"I thought Fabian's overall game was fabulous. He has been terrific for me this season. The strike was worthy of winning any game."
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