Yes, there is a lot of circularity to the analysis. Getting sent down to AAA, as Wallner managed to do, presents a real handicap toward getting the RBIs. (The missed time of course, but also the poor performance while he was up for this first stint. Once he was back up, his RBI rate was pretty good.)
Hit well, stay healthy, take your chances on the counting stats at season's end. Not exactly a revolutionary recipe for success, eh?