All Obama had to do was not get clobbered, and he could focus on the next round of primaries and caucuses. He did far better than that (right now CA is leaning toward Clinton, but even if she wins overall, he will get a sizeable number of delegates).
In states where he won, he uniformly pulled 60-70% of the vote. In states where Clinton won, she pulled mid 50 to 60%. Since the delegates are awarded proportionally, she could win all the battles and statistically lose the war.
Her victory in NY was only 17 percentage points. The only clear blowout she had was in AR, and TN was pretty good to her as well.
Bottom line, Clinton should be very, very worried. This is NOT going according to her game plan!