This isn't Bleach-related, but it could be. Why is fire so OP in real life/other movies/shows. You see people running away from a dragon breathing fire but unless it's actually dousing you with a liquid accelerator (gas, napalm, farts, etc...) as well, then the fire would probably just singe your arm hair/real hair. The most dangerous part of fire is the blast, and rarely does orange/yellow/red flames reach a temperature high enough to burn someone severely with a touch. I've been burned several times and it was always due to prolonged exposure. But, I don't know, maybe I forgetting something.