The Superensemble is a statistical model that takes output from the global & some tropical models and uses the known qualities and biases of each model with particular types of storms and tries to minimize that error. The MM5 is just our version of the standard MM5 model, here applied to tropical cyclone forecasting. It is a dynamical model, uses the GFS analyses as its initial conditions, and is run only over a portion of the globe. The two models are run by two different groups here at FSU, with the output from the Superensemble not available to the public and the MM5 output being freely available. There is no connection between the two other than the fact that they both originate out of FSU.