To ensure I give credit where credit is due, the fact that Israel took out a considerable amount of Iran's surface-to-air defenses was helpful.
That said, there were still LOTS of surface-to-air defenses still in place. So, this Operation proved that America's investment in the B2 aircraft and the thousands of hours of training of the crews has paid off.
While China is quickly advancing their air capabilities (mostly because they continue to steal our technology), the United States has the best Air Force in the world.