Life / Is Gdansk or Wroclaw better for social and nightlife during the autumn and winter in Poland? [6]

Normally I would think Gdansk is the obvious answer because of Gdynia and Sopot making it a 3-City complex with lots of tourists and parties/events during the summer. What is there to do in Gdansk during autumn and the winter though? What about Wroclaw, what is it like for night life and social life in general compared to Gdansk? Is "Pasaz Niepolda" district the only and/or main area to party in Wroclaw or is it just one of the locations?