Better? A simple machete, if you ask me. Much easier to carry along, easier to be readied, easier to swing and it will maim and dismember just the same (minus splattering gore all about the place while making enough noise to attract the attention of any mutant in the bomb-damned block)
But yes, in regard to the damage code a machete (sword) simply is not fairing half as good.
If you donĀ“t mind unwieldy weapons, consider the following tool. It was built to cut hedges, but if it runs on a battery (energy cell) or on an internal combustion engine, it might be used as a spear or pike.
..so, I always wondered what would happen if you hit something
solid with a chainsaw. Like "the concrete" or "a metal bar". If the chains rips appart while running ...well... I would not pick up a chainsaw as weapon....