I'm watching this now for more than a year and from my experience it's kind of random.
A lot of friends got banned over a long period of time and I know 100% for myself Punbuster bans innocent people. We run 3 BF3 servers since that without Punkbuster and today I start testing a BF4 without Punkbuster.
Does BF4DB ban for these violations mentioned in this thread and Punkbuster generally ?

Thx in advance & greetings.