ValhallaGH
Explorer
No way would I put up with a random bar-room brawler automatically making a character of mine unconscious with a single punch, regardless of my current hit points or abilities. Nor would I subject my players to such an indignity.
But a godly strong Ogre-sized character is not a "random bar-room brawler". He's the king of bar-room brawling, and he should be able to K.O. just about anyone under level 8, PC or not.
I completely agree that getting one-hit-dropped by a random dude in the bar is utterly ridiculous. Getting one-hit-dropped by the king of bar fights is only somewhat ridiculous; the ridiculousness stems from the presence of said king of bar fights in the same bar as the PCs, and him choosing to go after the drunk elf.