It is a tough thing to figure out for sure. There is a lot of things in the user interface of Scorum that are superior to Steemit and then some things that are better on Steemit or things that I liked better.

A lot of it is about the marketing of airdrops and stuff which can be really effective. STEEM has never done the marketing and Scorum's marketing push was initially and then they have went to a skeleton crew mainly.

It is a big positive that all the iterations of Scorum are gaining in Alexa rank overtime.