Back to this again? The original Star Trek used the Enterprise insignias for non-Enterprise officers on multiple occasions. "Court Martial" comes to mind as a pertinent example.
There's no evidence in TOS that the chevron insignia is associated only with the Enterprise - it appears on other personnel as early as "The Cage" and on occasion later. The "it's the Enterprise emblem" explanation for it was manufactured after the fact, as was a lot of other "basic" Trek lore - hell, they didn't officially settle the time period as being in the 23rd century until the movies.
The best evidence that AbramsTrek fits into the ongoing Trek Universe may, in fact, be that it's inconsistent.