From a strength-training perspective, the awnser is no. 

A pull-up utilizes your upper-back muscles (lats) in combination with biceps, triceps and forearms.  A press (specifically a military overhead press) concetrates more effort on your shoulders, triceps and traps (shoulder to neck muscles).

Check out the following site.  It has a map of all your muscles. Selecting on a muscle will describe what excercises to do for it: http://www.exrx.net/Lists/WtMale.html

Pull-ups: http://www.exrx.net/WeightExercises/LatissimusDorsi/AsPullup.html

Press: http://www.exrx.net/WeightExercises/DeltoidAnterior/BBMilitaryPress.html