Say what you want, Trump rattled the president enough to get him to produce his birth certificate. No one else was able to do it.
Now, why the president did not just reveal it when they ruckus first started is beyond me. The issue of your qualification for the office is important enough to deal with. That is not even considering the campaign promise to be the transparent president.
By not revealing it until Trump started his questioning, the president clearly looks to be afraid of Trump. The MSM can spin that all they want, but any observer of human nature will give this round to Trump.