[modeller_usage] how to evaluate which is the best model in "multiple template" example

Dear all: how to evaluate which is the best model in "multiple template" example? In the tutorial, it just use the model number 1 for the final one. How to judge these models which is better than the left? my another question is that how can we draw the "basic model" and multiple templates in the same diagram with GUNplot? Thank you very much.