Acting wise: Alia is far ahead, watch raazi you will get to know Alia is far better actor than shraddha.
BO wise: Majority of collection comes from metros that's where Alia is a star and score over shraddha though shraddha adds good value to a commercial movie for the mass audience which Alia can't.
Alia doesn't have mass audience.
Stardom wise: Alia easily because 10 tickets sold in interior doesn't count for 2 tickets in multiplexes of metros.
Fan following: Both have fan base but shraddha has bigger due to movies like Ashiqui 2 & Ek villain.
She's a star heroine for masses.
Look wise: Shraddha, I find her far more attractive
Personal choice: Shraddha, I find her cute and she looks deshi