Why are Yukari and secondary Touhou fans in general so obnoxious when it comes to powerlevel discussions?
When will people learn that it really doesn't matter if one Moonbitch can spontaneously summon any god she wishes to win, or the other has a crazy moon technology that can purify entire cities, EVERYONE in Touhou cheats.
Directly comparing their strengths is pretty pointless in Touhou, their powers are loosely defined and may even contradict themselves depending on which manual/book you read. As if that isn't enough, it's a fairy tale setting where pretty much everyone can use some degree of magical/spiritual/divine power to do things that aren't even part of their power set (for example, REPLACING THE MOON, STEALING SPRING) so everything depends on what role each character is in for the current story.
Hell, I've completed PoFV with Cirno before, beating all kinds of bad ass characters. There isn't any actual out and out statement saying it's NOT what happened, just the combined assumption of the majority of the fans. Not like a the specifics of the flower incident are covered well enough to debunk the crazy idea.
Point is, it's a light hearted fairy tale setting our lovable danmaku game is set in and it's creator doesn't take it very seriously. The events in SSiB don't really amount to much (like most of Touhou's plot) and in many respects it could be taken as ZUN trolling the fans who take his work way too seriously.
Stop embarrassing us true Touhou fans.
If somehow you overcame your massive autism and got the opportunity to ask ZUN if Yukari could beat the new 52 Superman in an interview he would laugh at you