The bio for the Prime version of Leonard McCoy on Memory Alpha states that he was stationed briefly on Capella IV in the 2250s, when he was already a Lt. commander. Now the Abramsverse version of McCoy enlists in Starfleet in 2255, expecting to graduate in around three or four years time (That's how long it would've taken NuKirk to graduate). Does this mean that NuMcCoy, like NuKirk, entered Starfleet much later than his counterpart in the Prime reality did? I wonder what could've caused his life to go so differently.