She's got touring on her side but she would need better airplay, which is the strongest factor.
Right now, the list should look like:
1. Rihanna (strong airplay and streaming - most important in charts)
2. Katy Perry
3. Taylor (about to pass Katy)
4. Adele (would be higher if she had better airplay but she only released like four singles this decade)
5. P!nk
Beyonce will probably be top 10 for females, though