Is Neuroscopic Proximal Filter bonus supposed to scale like this?

[swampzero]

Quality - %Crit
66   6
82   7
100   9
120   10

[swampzero]

and speaking of spell crit chance, is this trade-off supposed to be inconsistent between crafting and feats?

In crafting 66 quality ingredients trade-off:
-12% cost or 6% crit.  1% crit costs 2% manacost

In crafting 100 quality ingredients trade-off:
-17% cost or 9% crit.  1% crit costs 1.8% manacost


Psychosis:
20% cost or 15% crit.  1% crit costs 1.3% manacost

It seems it's always better to take Psychosis and use the mana-cost option than the critchance option on the headband