Symbolism counts here - both the moves by China and the US was symbolic here and will cause its own repercussions probably in the longer run, what it will do for the present time being is bolster the confidence of the other states around the East China sea, no one can predict what's in store in the future.
Yes, short term the US scored points here with their B-52 and we didn't do anything.
But this is a long drawn out Cold War.
China is not getting any weaker and as our power increases, we will have more chips to play with.
People get emotional over these things. But in the big picture, nothing has really changed.
People act as if the US has defeated China and that China is finished
Give it a couple of weeks and these emotions will die down as it has with every other incident.
Chinese military is rising, unless the US can stop that, they haven't done anything to change the current trends.
All they scored is a psychological victory over China.