Arsenal head to Wales looking to get themselves back on track to chase down the top four, having suffered only a second defeat in 13 league games at Fulham ahead of their FA Cup win over Leeds.
Tottenham's midweek victory over Everton saw the Gunners' arch-rivals climb level on points with second-placed Manchester United, and just three behind Manchester City, whom Harry Redknapp's men face next weekend.
Much has been made of the current difference between the two north-London clubs, as Arsenal are nine points behind Spurs ahead of the derby at Emirates Stadium on February 26.
Wenger, though, insists Gunners everywhere should not become obsessed with what is happening across at White Hart Lane.
"I don't look at Tottenham frankly. We look at the potential we have and then think that we gave absolutely everything to fulfil it," he said.
"The attitude is right and I am confident that we can do that."
Wenger added: "Tottenham are a good side, they make points, but there is a long way to go.
"At the moment it still looks very open and there is no one who dominates this championship.
"Let's wait to see what happens at the end of the season.
"No matter who wins the league, whether it is us or somebody else, we will respect it and congratulate them.
"At the moment what is important for us is to come back and fight.
"We will fight with Man Utd, Man City, Chelsea, Liverpool, Newcastle - all these team to go as far as we can."
Henry made a fairytale return to action when he came off the bench to net the winning goal as Leeds were beaten 1-0 on Monday night.
Wenger revealed he could throw Arsenal's former captain straight in alongside current skipper Robin van Persie against the Swans.
"Thierry is ready to start a game like he was ready to start against Leeds," said the Arsenal boss.
"The most important thing is that he helps the team to win games and the way he does it. I cannot tell you what will happen on Sunday.
"He can make us win games coming off the bench or he can make us win games starting them. Basically he just wants to help the team to win the games."