Redknapp believes the Brazil international is an excellent player, but reckons he was "destroyed" on the night.
"I think we saw in the first game he's playing against a right-back who, if you were picking your world XI before we played them, would have been it," he said.
"He was voted European defender of the year last year and no disrespect to him, he's obviously a good player, but Gareth absolutely destroyed him.
"To do that against someone as highly rated as Maicon just shows you what a performance he put in.
"It must have been tough for him, I don't think he's ever suffered like that before.
"There's not too many widemen around nowadays and maybe they (full-backs) don't get tested enough. As a right-back he was tested to the full in the last two games and proved that he is vulnerable defensively."