Kebe put Reading ahead after just seven minutes at the Madejski Stadium, and after Sunderland equalised through a Craig Garner penalty, it was his 85th-minute header that secured a 2-1 win for Brian McDermott's side.
McAnuff, who provided the assist for the 29-year-old's opener, said: "He's a real handful for any defence in this league.
"He has shown a different side to his game - he was back defending, blocking crosses and it was a fantastic header to get the winner.
"Jimmy is in really good form and he's been a big player for us so far this season. His goal return has been good and he's flying at the moment.
"He's a real sight to see when he's in full flow and I'm glad he's in our side when he's on song like this."
After a run of seven consecutive defeats, Reading have lost just once since Boxing Day and have also progressed to a fifth-round FA Cup clash with Manchester United.
A positive McAnuff added: "We had a tough little spell where we couldn't win a game, and that can happen in this league.
"We're on a good run but we just need to keep the momentum going and keep picking up the points.
"Our objective has always been to get above the team in front of us. There is a long way to go, a lot of tough games ahead.
"We're just going to take it one game at a time and try to churn out the results we need, like we did on Saturday."