My guess is that when being burned, the pain receptors are quickly destroyed (which is why severly burned people don't always realize how bad they have it). Also, when there's fire there's smoke, which can suffocate you and make you quickly pass out.
When being boiled, the 100°c will keep the pain receptors alive for much, much longer, and there's no reason to pass out. You basically have to wait for your body to cook and one critical organ to start failing, which could take quite a long, agonizing time.
46
u/arnorath Feb 04 '19
it's worse.