I'm not sure exactly, but typically you want more control over it. For example, was every mob you attacked level 1? When you dropped your STR from 266 to 230, why'd you change your Attack Power as well?

It's hard to test something like that without the rest of your numbers being consistent. The only thing I can tell from these numbers is that for some reason, dropping your STR and Attack Power not only raised your floor but your ceiling. I wonder if Archer's damage is more influenced by Dexterity than it is by Strength. It wouldn't be so farfetched... you can equip DEX but not STR to an Archer's weapon afterall.