The Arsenal boss once guided his own side through an entire campaign unbeaten and feels that the Red Devils have found a similar level this term.
Sir Alex Ferguson's side are only two points clear of the chasing pack at present, but have a game in hand on all of their rivals and have become impenetrable at the back.
Wenger is refusing to give up on his own title aspirations just yet, but accepts that United are now firm favourites to see off the competition.
"We are on a very strong run at the moment and we have promised to give everything until the last day of the season but at the moment Manchester United look untouchable," confessed the Frenchman.
"They are 12 points ahead of us and they have a game against Fulham (on Wednesday) which they will certainly win. If they win that they are 15 points in front and that means they need to lose five games.
"Let us say they lose one against us, that still leaves four. They still need to lose four other games, which they haven't done yet this season.
"But our basic target is to get into the Champions League and therefore the championship remains a priority."