How much good sportsmanship is required to not qualify as a d...?

Ectar: You win some you lose some wongman66.  As a tier VI td in a tier VIII match your impact isn't going to be much so in matches like that you can only play to your tank's strengths, pick your targets and look for tracking shots on the higher tiers, and hope your team carries you through.  Sometimes they do, sometimes they don't.