perfecting a stage or timing out a spellcard doesn't mean anything tbh, anyone here can pull it off with luck and effort
perfect the whole game or do scoring
Scoring? Nah. Too much memo.
Perfect the whole game? Not too likely.
My point is, how come perfecting Aya, Orin, Youmu, Utsuho, Marisa, The Prismrivers, Alice and i could go on and on, is easier than perfecting a blasted Stage 2 boss?
As for timing out cards, yeah anyone can do that if they dedicate enough time and effort on it. They can get lucky at all SFN's waves for example. And some will do it in 50 tries and others will do it in 4000 tries.
For me, i'll give a Touhou game 5 tries for a 1cc before i get sick of it and most of my spellcard timeouts come really quickly. I don't see why Kogasa should be such a problem.