Rooney's quiet season has exploded into life in December with two goals at Reading followed by another double in Sunday's Manchester derby win, but Giggs reckons his teammate contributes so much more to the side than just his goals.
"Wayne is the kind of player who can score goals but if someone is scoring more, he's not too bothered. He's quite happy setting goals up and pitching in with important goals like he did on Sunday," the Sun quoted Giggs, as saying.
"It's like when Cristiano was here. He scored a lot of goals but, like Wayne, he's not just an out-and-out goalscorer. He's more than that. Wayne is the catalyst to everything good that we do. He can score goals, make goals," he added.
Rooney has seven goals  this season for United, but in some ways he has been overshadowed by the stunning impact Robin van Persie has made.
The 22 million pound Dutchman's last-minute winner at City was his 13th goal since quitting Arsenal for Old Trafford in August.
Giggs said: "Robin has not surprised me because at 29 I knew he was a ready-made, experienced, world-class player. But he just has that bit of class that can make a difference like it did on Sunday. You see it in training, you see it in games, he's just a brilliant player."
After the euphoria of beating their bitter rivals, it will be back to basics for United on Saturday as they face Sunderland with a six-point lead at the top of the table. (ANI )