You're still using the wrong spell speed value. The actual combined value is 403.32. But yeah, point accepted. Trading in crafted pieces for i110 pieces has a small (keyword: small) increase on secondary stat value (6.82 worth). This does come at the cost of roughly 300 HP, however. Personally, I'll still stick with i110 gear as I've seen plenty of situation where the group, bar the tanks, ended up with <500 health or less. But penta-melding i90 pieces does seem viable to compete for damage for those who can't farm SCOB (completely). Assuming they think it's worth the time and gil (Savage Aim IV on Phoenix cost 300-700k depending on supply&demand)