You have already written differences between traditional marketing and digital marketing, which is absolutely correct. I am elaboration same and showcasing advantages of digital marketing over traditional marketing below:
1. Low Cost: While traditional marketing such as newspaper, television and other such media ads cost a lot, advertising through the internet i.e digital marketing is quite affordable.
2. Real Time Result: Digital marketing has an edge over traditional marketing since it is able to give quick results, while the latter keeps you waiting for long before showing any results.
Other advantages includes better engagement, quicker publicity, easy analytics etc.