Mariah Is Our Elvis

I just read this: "Mariah Carey notches her 17th No. 1 hit on the Billboard Hot 100 this week as "Don't Forget About Us" ascends one rung to the top of the chart. Carey and Elvis Presley are now tied for second place among artists with the most No. 1 hits in the rock era." I don't know what to do with this information.