Your welcome, I started a season with my Houston Astros, and I have noticed some choppy graphics issues (black lines in the left and bottom of the screen during a hit - I use broadcast settings). But the overall gameplay seems smoother than on 2015, to me at least.
I honestly don't know abut the stats as I haven't compared anything to real life stats - I am getting torn up 6-2 by Texas Rangers right now, I am using Keuchel, but I have pitching set hard for me (Hall of Fame with Pure Analog).
I do have to say, though, that they don't have the batting camera angle that I liked with 2014 or 2015 (which is batting zoom 3, I think), so I am having to work with the custom settings to get it more how I like it.
As for the announcers, basically the same, some few new lines, but they seem to call the game better (think of 2014 to 2015, I might say the difference between those is close to the difference between 2015 and 2016).