I don't agree with either being a stomp tbh.
1) It's just a low chance. It's still decisive. I mean yes the character won because the other would usually not open with the move he had. It doesn't mean the match is unfair, the match is pretty fair as both have equal chances to win (both have win conditions), though the fact that 1 character is usually more bloodlusted than the other turns it from an inconclusive to a decsive battle. Characters like
Medaka Kurokami have this same thing. She will literally never open up with anything that's "hax" so a lot of her loses are based on that, loses against Sailor Moon and Woflgang, matches which would be a stomp under "bloodlusted" conditions. I don't see why this should be a stomp. A stomp is when a character
can't win, as in no matter what he tries to do or go with, there is just nothing he can do. The "chance" part seems like a really bad example, it's the character's fault for being naive/nice/unwilling to end the match right off the bat, should he be willing to open up with that move he has more than enough chances to win, so it's not an unfair battle.
2) Why is this a stomp? How is this any different from our rules that "Speed Unequal matches
CAN be added". A character wins through having a faster move, yes character B cannot win if A starts with mind hax, though in a scenario where A would not do that, then B would win. It's decisive, but it's just based on speed.