Not a chance....we are responsible for our own actions on Earth....mortal sins are just that...mortal.....Hitler was supposedly a Catholic...I don't expect to see him in Heaven (unless he was forgiven of his sins before death) The OSAS theory isn't even a good one, Jesus came to forgive mankind, and indeed He did....however, He left us perfectly free to reject His gift, and, unfortunately, many of us have done so.....so sad!!!
Next question: Do only Roman Catholics go to heaven?