The difference between Legend M and Legend X is:
1. Radio
(might be) here for Legend M (I recall Z100 playing Morning Sun despite it not even getting an official release

)
2. Legend M is willing to actually promote. (Or so she says)
3. Legend M seems to have a competent management and team behind her.
4. Legend M is coming off an era with a platinum top 10 hit.
5. Legend M is just much more relevant in general, still talked about, still making headlines, etc. If you didn't know any better you might not even realize it's been almost three years since she last released an album.
But I say that with love because I (like the majority of the world) stan for Legend X.
