It's not noobish behavior but it's still childish. This one time I was playing DoW II the last stand, we had played several games together, it seemed we could win it so I suggested we start camping cause with some heroes it's the only viable option in the late game. So one player made a joke about us being like CoD players camping in the corner so I told that I wouldn't know cause I have ever only played single player and we lol'd but the 3rd player just started to vomit hate on us something about CoD players all being idiots and they should not touch DoW games or any rts games and then (probably) he just dropped. I know I didn't like CoD very much and somewhat regretted buying it but hate like that just stunned me.