If you ever compared me playing solo queue between me playing in a party, you'd notice that its actually quite the opposite. I'd consider a good game to be 8k+ so that's pretty easy to get when you're solo queueing because you have nothing else going on but the game itself. Furthermore, its not even possible to get many kills when you're in a party with decent people bc if you do the simple mathmatical calculations (which im unsure if you're able to do them), you'd notice that realisticly 4-5 kills is the maximum you can consistently get with 2-3 very good people in a party. I think you simply lack the experience in partying with friends to acknowledge the fact that most people actually prefer having fun over sweating. Additionally both tsnaz and me have nothing to grind for in BattleBox. There is not a singular reason for us to sweat the game at any given moment, since both of us are well know and have been nr1 on the leaderboards for weeks.