Not really imo. Lots of people are scared of him or dislike him because Witchers are considered "non-human".is Geralt sort of like Master Chief in the way that he is recognized as the greatest of the Witchers like Chief is the greatest of the Spartans?
Also, while you don't really get much insight into everyday human life in the Halo games, I always got the sense that the entire galaxy knows who Master Chief is. Not quite the case with Geralt. Most of the time people see you as just another dude trying to make it in a fucked up medieval world. Which is a good thing I think for the type of world and atmosphere CDProjekt is going for.