IMO, Ring of D is one of the few cards that's infamously known for changing a "loss" into a "tie"
Like both players have low LP, your foe summons a big monster for the win attack, you activate Ring of D for a tie instead by both players going 0 LP at the same time.
So, what happens in game rules?
Like you have 1 round win, 2nd round tie. Then what? Say you get a loss in the 3rd round. That's 1/1/1 right there with no win condition. Or say you get 2 rounds with both being a tie.
Like both players have low LP, your foe summons a big monster for the win attack, you activate Ring of D for a tie instead by both players going 0 LP at the same time.
So, what happens in game rules?
Like you have 1 round win, 2nd round tie. Then what? Say you get a loss in the 3rd round. That's 1/1/1 right there with no win condition. Or say you get 2 rounds with both being a tie.