Umm, isn't Ulfberht simply an allusion to a pattern welded sword with Ulfberht inscribed on one side, and all of them being made of different quality and from different materials? There are not even two hundred left in existence, and of the ninety six out of those that have actually been definitively identified as such, some are pattern welded, and some are crucible steel, so it is really just a "brand" or "logo" more than it is the idea that any of them are created equally.With that being said, whether one blade or another is better would be up for considerable debate. Now I think we all remember the documentary on melee weapons when we were kids, and they did use mathematics, ballistic jelly, etc. to determine that out of "style" of weapon, material nonwithstanding, that you can get much better cutting power out of a katana due to the curved blade than you could out of a straight bladed weapon, though the straight bladed weapon will be heavier.
Really, I wouldn't mind being the one to put my money on the khopesh, just to be the odd ball out.
It is interesting to hear you rage at fanbois over the scientific attraction to the katana, and then go on a fanboi expose yourself on the (nonexistant by stylization or material) VLFBERHT (since that is how it is spelled) sword.