I don't know if I'd say it is entirely compelling... after all, of all of the children who were hospitalised, none of them suffered any of the severe adverse effects historically associated with measles infection, such as pneumonia or encephalitis.
From the article:

Of the 118 cases, 47 (40%) resulted in hospitalization. Nine patients had pneumonia, but none had encephalitis and none died.
From Wikipedia:
Between 1987 and 2000, the case fatality rate across the United States was three measles-attributable deaths per 1000 cases, or 0.3% (177 deaths / 67,032 cases)
There were only 118 cases, I don't think you can expect to see any deaths fortunately. The compelling part is that only 1 of the cases were vaccinated not the veracity of measles itself.