You should be not be comparing MVPActivitiesAndPlaces and MVP . If browser history management is not your concern use only MVP.
Activities And Places are not mandatory for MVP. They only allow you clean browser history management which integrates nicely with MVP architecture.
UiBinder is not mandatory for MVP. They can be used with MVP.
The MVP design paradigm mostly is driven with Unit testing as main driver and to keep out slow running GWTTestCase out as much as possible.
At the heart of this pattern is the separation of functionality into components that logically make sense, but in the case of GWT there is a clear focus on making the view as simple as possible in order to minimize our reliance on GWTTestCase and reduce the overall time spent running tests.