Not sure what you meant. If you meant that the skills incorporate an Element Attribute (Power types and Dark Lords), or give extra Resist to you (Explorer's Lightning Rod and Bard's and Mage's Element Shields), or lowers opponent's Resist (3rd Job Field Resist), then I'd say you're right. But aren't there more element based skills for Warriors?
I meant the influence of Resist items you compound. Because I don't know for sure if compounded resist items are included in formulas like the attribute ones or it is just elemental resist based on nothing.