London: Arsenal manager Arsene Wenger hailed his young "developing" Gunners after their 2-1 comeback win over English Premier League-leader Manchester United on Sunday.Arsenal scored twice against a lackluster United in the last minutes for a stunning victory that stalled United's aspirations and encouraged all of its nearest rivals."It was a test of character, resilience and togetherness," Wenger said. "This team is developing into young, hungry lions, led well by (Thierry) Henry."Now we come to a period where every game matters - our target is to sustain that run."Henry scored the winner in injury time to sweep the season series against United for the first time since 2002. The France striker has scored in each of the four games he has played since his return from a back injury. "You cannot expect anything better - to play against Manchester United and be 1-0 down and come back like that right at the end and win the game," Henry said.Arsenal is fourth in the league standings with 45 points, 12 behind United.Arsenal can count only one loss in its last 10 league games, and remains unbeaten at its Emirates Stadium this season. It knocked defending champion Liverpool out of the FA Cup and the League Cup convincingly in the span of three days.United in tight spotSunday's win could be even sweeter since it could help derail United's title bid."They wanted so much to kill the time that it turned against them as well, because they lost a bit of their game," Wenger said. "With 10 minutes to go Manchester United were maybe champions, but at the end of the game you cannot say that."It will open up (the league) for everybody. For us and Liverpool a little bit less, but you never know."Two-time defending champion Chelsea had 51 points, six behind Manchester United, and third-place Liverpool had 46.A catalyst to Arsenal's run of late has been Robin van Persie, who scored the equalizer in the 83rd. But the Dutch striker suffered a partial fracture to his fifth metatarsal of his right foot on the play, an injury that stands to sideline him for at least six weeks.United manager Alex Ferguson was disappointed but not too down."Teams at the top always drop points on the run-in. It happens - but how you cope is important," Ferguson said. "Only true champions come out and show their worth - and I expect us to do that."Wenger hailed United's "mature" side, but wasn't sure the loss would leave a major dent in its confidence."Of course Manchester United will still be strong challengers for the title," Wenger said. "This will be a big disappointment for United _ but do not expect them to crumble because of it."But it is good for the interest of the Premier League, because everybody still has a chance. We have maybe less than all the others, but will just try to fight to win every game."