[CriticalHit]

More successful

[-Rockstar101-]

More successful

[JM4ever]

Same amount of success. I can imagine Adele singing it without the "Shayn Brayt Layk a Daymon" part.

[Lippy]

If she sang it as a ballad I could see it having the same success. Otherwise less successful.

[.:Allen:.]

More successful

[keshaspearsxo]

same sucess if it were from 21.
more sucess if it were the lead for her next album

[rbautz]

Adele and Sia both are much simelar singer (Breathe me - Hometown Glory) so it could be quite well suit her voice, I would say the same success.

[UnusualBoy]

I could see it being bigger

[ManDown]

Same success.

[DayNNite20]

I think it would go straight to #1 but fall after that so NOT AS SUCCESSFUL :/

[Poisonous]

Less successful... Rihanna's unique tone murdered that song...

[Glassheart]

More successful and would get her plenty grammys

[Liana]

Same success

[Mhs90]

Since her album went diamond, that would be hilarrrr yes

[EightSin]

If released as the fourth single after Set Fire, top 10 at best.

If it was the lead of her new album that would have just dropped, 1 mil+ opening!

[Quiqui4eva]

Same success only because its Adele. Anyone else singing Diamonds would flop

[Jaymz]

Less successful

[DILF $]

Less successful.

[IsidoraMarí]

Same Success, maybe more. Never doubt Adele.

Actually hearing Adele say Moonshine and Molly would be LIIFFFEEE so probably more successful

[Harry]

I ran in here thinking Adele covered the song.

Adele would add more lyrics obvs and flopped.