by the way you COULD have a large headed maul, hammer or morningstar...
make the majority of wood, plate the face or spikes with steel!
this gives benefit of big striking areas, which are good for blunt weapons, with hard/sharp material
as for the weight of weapons, aye, you can't really wield any of those stupid big things,
real claymores for example weighed about 4 to 8lbs which soon wear syou down swinging it etc
strongest man I ever knew was the only one who could pick up and lift upright (with a kind of snap/jerk/twist) a 56lb bush hammer with one hand (back before steroids etc, so just natural strength). Bush hammers were used to drive in "bushes" into the axles of large machinery, so had VERY broad flat heads
Him, maybe he could use a 15lb
fantasy style great axe, but even he'd get tired quick.
if you compare a wood axe to a real battle axe, the wood axe has a thicker body, designed to split wood like a wedge, but a war weapon has a very thin blade compared to the wood axe
wood axe has a sort of convex profle, the war axe has a flat one.