One strategy for Angry Birds Bad Piggies level 22-1 is to send the first Orange bird through the two ropes in the middle of the level, clearing the right tower and most of the center. Loft another Orange bird barely over the left tower, detonating the left TNT and destroying the rubble. Use one Black bird to destroy the left tower and finish the level. The score in the video below is 114,130.
Minimum 3-star Score: In the original release (v3.0.0), the 3-star minimum was set at 110,800. Rovio has stated that this was a mistake, and in a the v3.1.0 update, the threshold has been dropped to 110,000-even.