In 2011/2012 Influenza caused death in 0.13% of cases according to the CDC.
According to the numbers in your quote, in 1963 Measles did cause death 6% of the time worldwide, but it only caused death 0.011% of the time in the U.S., less than Influenza in modern times.
I don’t know why, but I felt like your numbers weren’t compelling, and I felt like looking them up. I don’t know what it means though. I’m sure there are other factors to be considered.