The thing is with Bujins is that it's all about anticipating what cards your opponent is just using to bait out Hares and Turtles and which ones are actually trying to get rid of Bujin. Crane works in the same way. If they are going to get around your Bujin no matter what, you need to preserve you're safety nets, and if they're starting to struggle, then you starting working the Bujingi. Bujin's also have to worry about the fact that they literally only have two cards that make the deck run in Yamato and Susanowo. Once they're gone, you're stuck with Mika and Hirume at best. You also need to know when it's safe to use your Carnations and when it wouldn't be effective enough. Trying to get over just two monsters with Carnation is what I would call a waste. You have to take risks that your opponent won't kill you next turn and trust the living heck out of your protective traps.
/rant
/rant