Difference is they were pop covers released as pop singles because she liked the songs. It's not like she had any trouble selling her own original material back then
I wish Say Something went #1 just so the Fighters would never stop mentioning it. But she's the reason that song was a success, so, you can't really fault her for it. The song is a boring mess without her ghostly presence.
All I want is you, come over here baby
All I want is you, you know you make me go crazy
All I want is you, now baby don't be shy
You better cross the line
I'm gonna love you right
'Cause all I want is you