Military Hero?

I was reading an article in the CSM about Wesley Clark’s expected entry in the Democratic Primary race, and I came across this quote:

While a Clark candidacy might draw some comparisons to that of Dwight Eisenhower, observers point out that Ike was far more of a national hero - and that the Kosovo campaign, which Clark led, was not exactly World War II.

“Clark has the “general” in front of his name, but he’s not a military hero, exactly,” says Stephen Wayne, a political scientist at Georgetown University.

I agree that Kosovo was not in the same league as World War II by any stretch of the imagination, but I think belittling Clark’s service and leadership is a bit out of line. What exactly makes a “military hero”, then, Mr. Wayne?