Sir Alex Ferguson claims if they had copied the pragmatic approach of Roberto Mancini's Manchester City they would have the advantage in the title race.
City top the table on goal difference knowing a win over Queens Park Rangers on the final day of the season should secure the championship ahead of bitter rivals United.
Ferguson believes if his side could close out a game like City then they would have the advantage in the title race pointing to the draw with Everton last month when United threw away leads of 3-1 and 4-2 to draw 4-4.
"In the end we just ran out of time, as Mancini made changes to give him five at the back," said Ferguson referrring to the defeat to Manchester City last weekend. "It's the Italian mentality - and maybe we should sometimes go down that road.
"We could certainly have done with bolting up the game against Everton.
"If we had done just a fraction of what City did, I would probably be saying quite a different thing."
However, Ferguson claims he is proud of attacking mentality of his sides despite it costing them two crucial points in the draw with Everton.
"It is not in our nature to put up the shutters and I like to think that it is our attacking, adventurous approach that has made United famous," added Ferguson.
"On balance it's a policy that has also served us well in terms of trophies.
"But if we lose the league this year there is no doubt the pivotal match was the 4-4 draw."