Dash is doing something totally different. The two approaches are not even on the same level. Bitshares is also on another level than this implementation but no where near what Dash is working on. Both are just gimmicks compared to what Dash is implementing with Dash Drive. If the smartcash devs are honest they will tell you the same. It is better than nothing and hopefully just a starting point but please don't compare it to what Dash is doing.