Berba struck United's third in their 3-1 victory.
Berbatov said: "It's my first goal in the Community Shield, so it's a good day for me. It's always good to score against a good side like Chelsea."
There was a difference in quality between Javier Hernandez's goal - a shot which went in via his head - and Berbatov's composed finish.
But the Bulgarian said on Sky Sports: "A goal is a goal, it doesn't matter how you score it. If the ball is in the net - that's what counts."