Aretha the Queen of soul sung rolling in the deep and it didn't sound nowhere as soulful as Adele's version. A lot of people sing Adele songs "well" the same way a lot of people sing "I'll always love you "well" yet they can't evoke the emotions that connected with the audience like Adele and Whitney. Yes I'll always love you is a cover but the original version wouldn't be mentioned if it wasn't for Whitney's version so that makes Whitney's version the standard.