Does Douthat say anything of importance here (insert stupid joke about "I doubt that"/Douthat here)? Why am I supposed to care. Really.
I'll attempt to summarize it. OBAMA! He more enlightened than Bush. He care for world more than Bush! This could be problem. Will it work? Wait and see!
So, he didn't mention Obama's bypassing of Congress nor did he pose any substantive differences between Obama's foreign policy and Bush's foreign policy. He merely went into detail about their rhetoric.
Stay away from mainstream opinion pieces at least 90% of the time. It's good for you.