Capibara/Selenium vs Robot Framework for Rails : I have to decided to choose between Rspec/Capibara  over Robot Framework for integration tests.

Previously Robot framework was used for integration testing in the project I am working on. As I now joined the team so I tried to change it to Rspec based integration testing using Capibara but I have to convince the top management that Rspec and Capibara is better option for Rails based application.

So basically I need a comparison table between these two frameworks Which will tell that Rspec is better option than Python Robot Framework (if it is better option)