No, no no no no and again no! Pretending to do something, is NOT role playing! To be somewhat anal here, but if you really want to get to the botton of it, then you have to look at where 'role playing' comes from, the kind of stuff adults do, I am not talking about children 'pretending' to be cowboys and indians. I am talking for example about Dungeons & Dragons and various other table top games. What is it, that creates a 'role playing' here? It's the context of the setting. A Paladin or Druid is only as much worth, like the environment recognizing his role. You can give both characters the exact same issue, but both will deal very differently and thus create two different outcomes obviously in a 'real' game the dungeon master can react on it on the fly, but games try to show this trough different endings and consequences, if possible.Pretending is the very definition of roleplaying. You just gain assistance for the story.
When you decide to role play a certain character then you also decide for a frame and to stay within this frame and make decisions based on this character. Darth Vader would certainly do things in a different manner compared to James Bond or Sherlock Holmes, and playing ALL of those roles, doesn't make much sense.
In Skyrim you role play one and only one role, the adventurer. That's the problem that I have with the game when it comes to role playing. It doesn't matter to the world if you're good, evil, a mage or a thief. Everything pretty much reacts in the same way to you and almost EVERY quests in the game world, leaves you with only one choice.