There was never a mention that fights against PC and NPC would be any different (melee damage-wise, that is). In fact I think you can assign AC and ATK to mobs in the EqEmulator. While your points about PC v NPC fights being different might be true, I'd say that IF they are different at all, it's only by a constant factor (i.e. damage is decreased by 20% per hit, or something to that extent, just like with spells on NPC's). In that case, the effect of stats would be proportionally the same.
Besides, as I repeatedly stated, long, very long parses in eldenals courtyard with or without DEX buff of +60 did not show a significant difference in hit rate %.
To Alton's very good point that DEX can be increased to 485, so my +73 DEX might not mean much in the big scheme of things, I respond:
- just imagine that HR increases with DEX/60 (which gives 1.2% increase for a +72 DEX increase, as in my parses) - that means that a lowly equipped PC (dex 150) and a tier 7-9 raid geared PC (dex 485) will only differ by about 5.5% hit rate attributable to DEX... of course, assuming that they both have the same AA's.
- moreover, if you take into consideration that DEX above the 305 cap counts as 1/3 of DEX under it, the 485 translates into an effective DEX of 365. That means a difference of 215 points to the lowly equipped PC, which means a mere 3.5% difference in hit rate.
I am not saying that DEX should mean more - if it did, we might get the paradox that everyone can reach 100% hit rate really fast. BUT the point remains, that DEX is a stat nice to have, but nothing to cry over (or replace other stats for).
In comparison, average damage dealt by a player is directly proportional to his/her ATK. 73 STR adds about 65 ATK. Suppose you have 1300 ATK (mid-tier raid geared melee), 65 ATK more means a 5% improvement in average damage dealt. Compare with 1.2% damage increase due to +73 DEX (increased HR, therefore increased DPS), and you understand my point above.