Quote Originally Posted by Archulak View Post
The point is that since the combo of allagan + darksteel is 10% worse (about) than stardust +1 if the allagan weapon becomes 10% better than it is. That makes it exactly a side grade. Also if something crazy happened and allagan was 50% better than it is currently every other class gets that 50% boost but BLM gets a 40% boost.
You're forgetting the Magic Damage stat that the new ilvl will give Allagan. Even if it's just 1 Magic Damage, that's worth more than the stats you lose using Darksteel. Still not as good as having a ilvl 95 Offhand of course, but likely better than Stardust +1, easily.