The former defender was also enthused about the great asset Arsenal now have available to them.
The Gunners beat the on-fire Germans 2-0 at the Emirates, with goals from Olivier Giroud and Mesut Ozil sealing what had looked like an unlikely result beforehand.
It was a much-needed three points for Arsene Wenger’s side to keep their European campaign alive after they lost their first two games in the Champions League this season.
And Ferdinand says it was refreshing to see them change their style and be successful doing it.
“I thought they were capable of taking a result but the way they have done it was really refreshing,” he told BT Sport.
“It was really pleasing to see that Arsenal can have a change of style and be successful doing it. That will fill them with unbelievable confidence.”
Speaking of varying styles, the former Manchester United defender was also enthused by the options Wenger has to change the game with Theo Walcott and Olivier Giroud as his centre forwards.
Walcott started the game as worked tirelessly for the side and came close to opening the scoring with a point blank header being brilliantly denied by goalkeeper Manuel Neuer.
He was replaced by Giroud later on in the game, and the Frenchman offered something different as he went direct and caused the Bayern defence with his ability to hold up the ball.
He eventually got the crucial opening goal, and Ferdinand says that ability to change the style by swapping the forwards is a great asset to have.
“Another great thing about today’s result you’ve got Theo Walcott, who had a couple of half chances throughout the game and tried to stretch the Bayern Munich defence,” he added.
“Then for Arsene Wenger on seventy odd minutes to be able to bring on someone [Olivier Giroud] with such a contrasting style, [it] is such a great asset to have.”