Poor Gary Mitchell. Kirk makes a big deal of Spocks death being the first time he's ever faced death - I guess fighting his former best friend to death on a barren world doesn't count and is never mentioned again
Just a random thought as I watch the blue ray for the 50th.
Kirk came face to face with mortality lots of times in TOS. That's just one of the ways in which TWOK falls apart under scrutiny.
However, I see the movies as kind of "broad strokes" depictions of the Trek mythos for general cinematic audiences who may not be familiar with the minutiae of the series. TWOK is quite enjoyable as a standalone movie that just happens to have some vague backstory that may have had something to do with a TV show from a couple decades before it.
Kor