What about the other foreign weapons? Is it true that maul > hammer and pike > spear? I know you need a particularly large/strong dwarf to carry either.
If you check the raws, both the maul and pike are just bigger versions of their counterparts with higher numbers all around.
So, yeah, if you edited the minimum size/two handed values of them so that all dwarves could use them one handed, they'd be flat out 100% superior to their smaller counterparts, however the offset is that most dwarves can't even pick them up, and the ones that can can't use a shield with them.
Also, the problem with whips and scourges is, while being able to penetrate steel armor with a silver scourge, and jam skull through brain with just about any whip ever, due the the teeny tiny contact area you're hitting useless areas a lot, even if you are punching all the way into something currently, meaning you end up killing by slower blood loss as often or more as you tear apart brain or something else fatal.
Another unrelated thing about hammers, while playing fortress defense 2 mod I ran into the giant civ, the post in the mods forum for it says their average size is 9,000,000, I think. Anyway, they are so big, that their armor is so big, that my exceptional adamantine axes and short swords often were completely deflected by no-quality bismuth bronze armor. They could cut off the lower arms no problem, but beyond that the best they could do is cut open exposed areas like face/ears/toes and bruise places that would normally end up severed. SO i'd have 30 or 40 armless giants trying to kick my dwarves to death until they finally bled to death or someone got a neck shot on one. So, i made some platinum warhammers, and they totally destroyed the giants.
Anyway, before that i just split my military half swords half axes, the swords don't sever stuff as often as the axes, however they penetrate deeper than axes do(kind of like spears, if you've ever had a non-bleeding FB that was too thick to kill with an axe, you know what I mean). Afterwards, it's like 2:2:1, I guess. Though I definitely wouldn't bother with hammers at all without platinum, silver just doesn't do the weapon justice.