What character level are you? Item stats are somewhat dependent on your level; the higher you are, the more likely you are to get stats in the upper range for that item.
I never tried the dagger, but this is what I got for the sword (level 30 something IIRC, on my second try, then I re-loaded in vain some more looking for both Life and Mana Drain);
Nobleman's Sword
Durability 12
Charm Quality 3
Damage 71-100
2 Strength
4 Agility
6 Constitution
60 Magic
Life Drain(4)
Stun(5)
lightning Damage(5)
Spiritual Damage(4)
