Last post on the issue at hand:

All weapons crafted at level 20, craft and blacksmith 5, only sharpened.

Level 20 1H Axe: Damage 139 - 278, 2x crit damage, no extras
Level 20 2H Axe: Damage 225 - 449, 2x crit damage, 11% extra crit damage chance
Level 20 2H Sword: Damage 204 - 330, 2x crit damage, 13% extra crit damage chance, +3 strength

Legendaries, all only sharpened
1H sword Coffinfeeder (Cassandra, Level 18!), Damage 158 - 205, Tenebrium 47 - 62, 1.5x crit damage, Initiative and constitution +2, shield +1, 30% chance bleeding, allows eroding strike spell, 30% tenebrium resistance
2H Ornate Scythe of the Witch level 20, Damage 139 - 352, Air 21 - 52, 2x crit damage, +24% crit damage chance, strength +3, 25% muted, 15% cursed, 10% stunned

Conclusion:
A level 19 sword of planets and/or a level 20 buffalo sabre are so much better than the 1H sword (not produced) or Axe crafted that there is no discussion
A level 18 ensured find legendary 1H sword is so close to the aforementioned 2 that a decision is taste, not logic. And that implies still clearly better than the 1H self crafts.

For the 2 Handers the contest is closer, but still - I would prefer the scythe over the self crafts.

I could have included some decent legendary 2H hammers but left them out. I admit one thing - you have to be a bit lucky at the undead trader in Hunters Edge or the international trader in Homestead to find the good 2 Handers - there is a huge variety thus a self craft might be better in some cases.

But all of that validates my only slightly modified conclusion - I have yet to see a better self craft than a legendary except 2 handers in some cases.

Regards,
Thorsten