I think overall, it's really mesquite, and everything else.
To further explain this - yes, if you smoke a chicken with apple, it may taste milder and more pleasing than one smoked with the same amount of oak, but is the flavor different or more smokey? Some woods make a more intense smoke flavor, but it's smoke flavor. As an experienced Qer, I would use 1/3 the amount of oak as I would apple, and I would bet that then you couldn't tell the 2 apart. I cook with what's readily at hand, and don't really worry about a flavor difference because I really haven't ever found one within the realm of acceptable hard woods (meaning I don't use walnut, ash, locust, etc) Some woods take less to get the job done, but in the end, smoke is smoke. Maybe my palette isn't that sophisticated.