Why the same setlist? Why not hello, carwash, i turn to you, somos nada, hurt, unless it's with you, stronger than ever, soar, keep on singing my song, you lost me, oh mother. Yes what I mentioned are mostly ballads. Aint Beautiful and say something Ballads too?.
She has the same setlist since this is a 'tour' of sorts, shes bringing the same show to all her scheduled events worldwide. She usually does have similar songs and vibes at this point, but she changes up some arrangements and interludes as time goes on. The current version of this setlist soft debuted at the Lovers & Friends festival this year I believe, altered a bit from the shows last year to promote the Aguilera album. That's not to say she is known to change it up a *lot* but she's still in the same promotional cycle of touring, I wouldn't expect anything to change too much until a new album era and concept. I do really hope one day she has a more intimate string of shows as a tour where she can strip it back and do songs she hasn't before, kind of like a VH1 Storytellers vibe. I am happy we did get a performance of Hurt recently though since it was so unexpected.