i dont ever throw games but i do play with drawbacks when im teaching. i also help them build their list and explain what every unit and their rules/gear are with reminders in game. example being i wanted to see how a blob of bloodletters+skulltaker would do in my dark eldar list. figured the field pressence would be funny. brother plays grey knights...pretty crushing loss on my end. next game was dark eldar again. pure list. was closer but he scraped a victory. i didnt throw the match just didnt make "quit the game forever" lists. most recent was my wolves vs his knights. told him outright that my list was unkind and gave him tactical advice. i lost no units. felt bad until he said and i quote "i got over confident because of the last few games and didnt think clearly. i wanna play again when i get better at list building."