^Pointless. What Momo considers a loss or not does not constitute to an actual loss in a struggle between her and Shamiko. It's a joke phrase a la "Don't get cocky just because I messed up". Momo was careless and weakened, but Shamiko did not actually do shit.
Victories by luck only work if you were competing in the first place and when luck was ever a variable to the fight all along (like in your bad example of a luck based game like snakes and ladders). Shamiko was not fighting or competing with Momo at any point when she got the blood. If Momo had actually agreed to Shamiko's vassal deal back on the sakura tree hill at the end of the anime... THAT would have been a win for Shamiko.
As @Iunthoron points out, these "victories" are made up nonsense for jokes. It's a fact that Shamiko and Momo both never won anything because they never competed (except for the test results at school). At best you are conflating reaching a goal or having a success with "winning".
Your "victory" sounds like this scenario: Two families are mortal enemies and one of the enemy's family members dies of a heart attack. Then one member of the first family claims that's their victory. Sounds pretty stupid, right?
last edited at Nov 13, 2019 11:54AM