As @nuoctuong mentioned, the difference is quality over quantity. Firstly, it will be hard word for you to post 10 times a day and wait for the best time to upvote yourself. Secondly, I don't think anyone can write 10 quality posts per day. The average Steemian already find it hard to write quality content once a day, 7 days a week.

We want to give an incentive to authors to start writing less often but of better quality. As our members get better at writing content, they will grow and so will we.