You could plot a "features vs time" graph, and ED would be a long, steady, straight line, while SC would be a very shallow exponential curve with a sudden, big upsurge when (if) it releases.
SC will need to experience an exponential increase in progress if it's ever going to make good on its many and varied promises, but that doesn't mean it currently is. Unless the curve is becoming increasingly flat rather than steep, that is. More likely it will continue being a shallow, but more or less flat, line, which suddenly plateaus when Roberts decides it's "good enough" for MVP.