I'll grant that the Khopesh would be better than aluminum weapons, and probably iron as well (since Iron was inferior to Bronze, and was mostly used because copper and tin were harder to come by then iron.) but not steel weapons. Of course Skill is still what counts, so I'd have avoided a fight with a khopesh wielder myself, unless they looked like a bungling farmboy (but not Blacksmiths. Everyone knows not to mess with the blacksmiths. They always seem to survive and come back to kill you later. Farmboys are safe, their pathetic defense is only there to convince the reader how terrible of a person you are.)
I wouldn't call farmboys
safe. About one in ten bungling farmboys is actually an exiled prince, hiding from the evil vizier who seized the throne, and they have a nasty chance of suddenly gaining fighting skills out of nowhere when pushed to a corner. I suspect ancestral memories.
Also, a samurai could take on a helicopter. It happened to me once in Civilization IV. The Japanese also get some free upgrades as a cultural bonus, making them generally quite dangerous. Of course, the unit they replace is the swordsman, not the knight, and if you are fighting knights with samurai, you should really research faster. At the rate you're going, you're going to be defending against cruise missiles with muzzle-loading muskets.
And the Egyptian chariot can beat both, of course.