I has never bothered me, but now that i look at the recipes and descriptions here, i think you are correct.
Stats are plausible (the smithed naginata larger, slower, much more damaging),
smithed naginata has DURABLE_MELEE while the survivor variety has not (again sounds right),
but the survivor variety seems a bit overbuffed in techniques
I think that the smithed variety could use wide strike and impaling strike, while the survivor variety should lose block for parry, and maybe also lose wide strike (it is shorter and faster, has to have lower reach)