They are both great at acting. Emma Watson came into limelight at the age of 11 when she starred in Harry Potter. She was a good actress at a very young age. Emma Watson is a British actress who has also done modelling.
Emma Stone is also a good actress and she is also very good at modelling. Emma stone got her first big break as a model in viral, David Fincher-directed music videos for The Strokes. Emma Stone has also starred in movies like Easy A and The Amazing Spider-Man.
Emma Stone is an American actress, writer, and producer best known for her role as Stephanie in the 2010 teen drama "Easy A". She's earned a star on the Hollywood Walk of Fame.
She also played Gwen Stacy in the 2014 Spider-Man franchise film, "The Amazing Spider-Man 2", and gave a notable performance as an aspiring actress in the comedy-drama "La La Land." She's been nominated for three Golden Globe Awards and two Academy Awards.