This just happened to me. I was playing viper and this one guy would keep flaming because I didn't use my ult when we were attacking. The problem is vipers ult isn't very useful on attack unless you plant the spike which we weren't able to do since 2-3 people were dead with in 5 seconds into the round. When we got to defense this guy wouldn't stop flaming so I told him that his (presumably) friend had a single kill during the first half and he told me that kills isn't everything. Now I agree with this statement however when you have 2 people that almost get zero kills per round then no matter how much utility, info they provide it doesn't matter. Please don't backup these even if they are your friend, tell them it is wrong to hold someone responsible for the loss.