PC master race is only an issue when people know you play on PS3. Personally I have never had an issue and in fact have never had anyone ever call me out for playing on PS3, and is usually the opposite when I tell them at the end of a dungeon and they're positively surprised that I was playing on a console. If you perform well enough then there really is no distinction between the 2, except loading times however I've seen PC players load slower than PS3 players.
Personally I had a spare SSD lying around and it's made my time playing much more enjoyable, but I didn't always use it and still never got called out on it.
