Sir Alex Ferguson's men wrapped up the title with a 16-point lead over rivals Manchester City, who secured last season's trophy on goal difference.
"It's always sweet when you win the title and it's nice to do it here, in the right way and in style, not on goal difference," the Irish Independent quotes Ferdinand as saying.
"We have won it outright and we have won it comfortably. It just shows the resilience and attitude the manager has instilled in us. A lot of teams would probably have fallen away."
United have four games left to play in their campaign.