I don;t think that Gonzalez played very well against Valencia. On the issue of how fast he is. Well, on one ocassion he made a run behind Miguel, who is very fast, and he easily outsprint him. I don't know if he is as quick as Cisse, but if he is not he is very close. He surely will be one of the fastest players in the Premiership, and times his runnings better than the French. I think Benitez may use him as a LW and as a second striker, especially for away games or when defending a result. His pace would be lethal.