Arsenal striker Jose Antonio Reyes still believes that Arsenal have a better squad that Chelsea, in spite of the fact that they sit 17 points behind the Premiership champions in the league.
The Gunners have lost successive league matches at Bolton and Newcastle and Reyes admits a victory is essential when Jose Mourinho's side visit Highbury on Sunday.
"The whole of the Premiership needs an Arsenal victory so that they don't get too far ahead and we will work exceptionally hard for it," Reyes said.
"Some people have said Chelsea's squad is much better than Arsenal's but I think we have enough quality at this club to be regarded as a better group.
"When I look at our players I think we are just as good, if not better than them. The only difference right now is that we are still adapting to life without Patrick Vieira, with certain players changing positions and adapting to new roles in the side.
We've also suffered far worse from injuries than Chelsea have this season," he added.