I can see the use case, but I can't yet figure out how MakeDrive is different from a syncing solution (say, OwnCloud, SparkleShare, SeaCloud etc.) combined with

I can see the use case, but I can't yet figure out how MakeDrive is different from a syncing solution (say, OwnCloud, SparkleShare, SeaCloud etc.) combined with a node.js service which allows to access local files. What do I miss?