The Blues were ruthless in their win at Stamford Bridge, which opened up a 12 point lead over the Gunners at the top of the Premier League standings.
"They look at the moment in full confidence, powerful, strong, they don't concede goals," Wenger said. "It's for them to lose it.
"They are in the best position, they don't play in Europe, they can wait every week for the next game and prepare properly. They are in a very, very strong position."
The Frenchman was forced to watch the match from the stands after picking up a ban in their recent win over Burnley, and was also upset with what seemed a clear foul on Hector Bellerin as Marcos Alonso opened the scoring at the Bridge.
"It is very frustrating because I prefer to do my job like I want to do it, but I have to pay for what I did and I accept it. It's frustrating to watch from upstairs because you sit in the middle of people. But I don't think that is an explanation of our defeat today.
"Of course it was a foul (on Bellerin). But (the ref) allowed the goal and after that I think it was much more difficult for us. We were 1-0 down and Chelsea are very good at defending and very strong in transition, on the counter-attack. We paid for that."