Earlier quoted context omitted.
In my experience, if you are writing a game and you have artists committing assets to your repository, git can be very difficult to work with because it requires quite a bit of training to handle properly. SVN is something they're more used to.
Please elaborate on "training". Do users check in things they shouldn't? Complain that clones take forever because of the sheer size of the files in a tree? Something else?
It's more about learning how to deal with git's error messages. They are very cryptic if you don't have a complete understanding of how the underlying system works.