Wut? Are you seriously comparing MHJ's generic y2K retread music with Olivia's god tier vocals, Swift like lyricism, and 80s power ballad epicness?
I consider Swift the greatest pop act and songwriter since the heydays of rock n roll back in the 70s and 80s. Olivia not only matches Swift in songwriting but does her one better with her elite vocals, Swift bless her heart just can't sing.
I'm comparing their domination
NJ in SK while Olivia in US
They came out of nowhere & quickly shot to the top & remained there for a while