If I can sing these singers well does that I can sing well?

I can sing anything by Taylor Swift without much effort and can sing any song by Avril Lavigne with some effort. I can on any given day sing any songs by Michelle Branch Kellie Pickler Leanne Womack and Beyonce. I can sing most of Kelly Clarkson's songs with a lot of effort. I can sing some of Evanesence's songs as well. I can even sing a few songs by Mariah Carey only a few. They are pretty on any given day I have a hard time when it comes to singing their songs. So does that mean I have talent or not?