Why do I complain about DBs?

first, nx is 1:20 in mts
second, 555 cubes to yield 80% is lucky
third, even 60-80% still won't yield an "OP" dual blade (the point of my post, that you obviously missed)
fourth, what does it matter the value of mesos
fifth, cant think of anything, but im sure there are other wrong assumptions you have made in evaluating dual blades and my response to them

1. It's 1:15 last time I checked a couple seconds ago. But since you're in a different world, NX ratios will tend to differ. Most worlds use 1:15 last time I checked, so I'm assuming Locked used this as a conservative estimate.
EDIT: Reread and noticed MTS. You get more bang for your buck if you directly transfer your mesos into NX with the 1:15 ratio than if you buy a bunch of stuff to MTS. Since almost everyone wants more bang for their buck, I see that Locked's use of 1:15 ratio is justified.
2. He gave a range, not a discrete %. He also said at least.
3. He never said OP, he said that it was "enough to get you somewhere".
4. (I'm assuming that that means the NX: meso ratio) You can convert mesos to NX, cube your equips, sell the advanced potential scrolls you get, convert the mesos you get from that into NX, cube again, rinse and repeat until you're satisfied with the results/run out of supplies. I'm assuming Locked realises this, as he's trying to stress the fact that 10 bil can actually do something.