@Kritin Kapoor: Lauren Babic, but that's a really different genre. And Christina Aguilera could singer very powerful too, though I don't know if she's still able to sing like that now. read more
Ariana Grande usually performs with choreography and backing dancers, and I guess people sense this as more immature than Adele’s performances, and they will automatically find that Adele is a better singer, because people respect her more. read more