Read Post #1741 and also #1742 in this thread.  It explains the benefit of SuperNET.

Don't speed read through it, or glance over it. The information is right in those two important posts.

In short: Any SuperNET sponsored coin, can use any other coin's features.  Devs are shared among all SuperNET coins as one big group.  Holders of SuperNET coins can enjoy the fruits of all coindev labor across all coins.  It's a sharing of technology.