The Spurs defender returned to action this week after four months out with an Achilles injury.
Asked if Spurs were playing the best football in the league, he said: "I think so, yes.
"I've been out for a long time and I've watched a lot of football and I've watched a lot of Tottenham.
"We've lost one in 18 and that doesn't come easy, it comes with hard work and performing week in and week out."
Spurs are currently third in the Premier League, level on points with second-placed Manchester United and three points off leaders Manchester City.