Mariah Carey recently earned her 18th career #1 on the Billboard singles chart, passing Elvis and moving into second place all-time, behind only the Beatles. This actually led to ridiculous commentaries suggesting that she is legitimately bigger than Elvis. I've never heard anything so silly.
Despite 18 #1 hits over the past 18 years, Mariah doesn't have a song - not one! - that qualifies as a classic. Elvis had classics - Jailhouse Rock, Hound Dog, Can't Help Falling in Love, etc. The Beatles had tons of classics. How about recent acts? Whitney has her classic - I Will Always Love You. Celine has her classic - My Heart Will Go On. Mariah's still waiting.
Quick... how many of Mariah's 18 chart-toppers can you name? Most were utterly forgettable. Sure, she's responsible for the longest-running #1 song in history, at 16 weeks, but can you even remember what it was?
Mariah has had a great career, and I admire the way she's come back from the brink of obscurity (Glitter, anyone?) But let's not try to pretend she's in Elvis Presley's league.