I saw that picture, which I think was taken last Monday at Raw, and it had me wondering this too. Depending on where WWE wants to go with this thing, it's something that MIGHT work.
As of right now, when you look at AJ's character and her remarks during commentary & promos, it's almost as if there are two kinds of "Divas" in WWE at this point, or at least there MIGHT be two kinds at some point. You have the Divas who are part of the Total Divas show and AJ gives the idea that these Divas are more interested in being reality show stars than wrestlers. Then you have AJ, the wrestler who covets and continually puts over the importance of being Divas Champion as the ultimate sign of accomplishment in WWE.
IF, IF, IF WWE wanted to, they could easily take the storyline in a direction in which the term "Diva" is almost a slur. The slur in this case would be applied to women who are viewed as untalented women who get by on their looks in wrestling rather than their wrestling.......ummm....well.....I guess maybe it kind of already is a slur when you consider how accurately that applies to many of the women on the WWE roster?

However, you get the point I'm trying to make.
While the term Diva is sometimes used to describe a glamorous, highly successful, talented & beautiful woman; it's also applied to describe women who are self-centered and pampered. So WWE could use this storyline to abandon the term as it pertains to the women on the roster, but I doubt it.
Unfortunately, I have a feeling that WWE is ultimately going to go down the road of revealing that AJ is merely jealous because she isn't featured on the show. Cole, JBL & Jerry Lawler constantly try to insinuate her jealousy whenever she's done guest commentary despite the fact that she has vehemently and repeatedly denied it.