Some have said, though, that Pine's Kirk is much different than the Kirk from TOS.
Others have decried there are NO redeemable qualities in STiD here. It's also spoken elsewhere...
It may come down to bias. In fact, I would be it comes down to bias. For myself, I kept open the idea that Pine's Kirk would be different, but when I watched ST09 (and again in STiD), I saw Pine really echo many of Shatner's mannerisms in Kirk. Not so much to be a copy, but enough for me to believe that yes, these two men, Kirk from TOS and Kirk in these movies, is the same man.