Rooney's 58-yard goal spurred United to a 2-0 Premier League victory at Upton Park.
Fletcher told MUTV: "I've seen him try it a few times in games and he's not quite pulled them off. But to have the vision to see the goalkeeper off his line and the way he executed it, I thought it was fantastic. [Becks or Rooney?] I've got to say Wayne's actually. His was more of a half-volley. I think Becks' was from a bit further out but I'm sure Wayne will be claiming it [that it's better], don't worry about that!"
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