I created a MVC app based on 1.1. Now, I'd like to port this app to 2.x. Is there any document that compare the class/method/event names between 1.1 and 2.x? Or is there any document that shows how to make porting easily?
At the moment there is not a document of that kind.
However, I suggest you to read this great article written by Tommy Maintz that explain in details the Ext JS 4.0 MVC architecture. In fact, Sencha Touch 2 MVC is more like Ext JS4 than Sencha Touch 1.