I have given evidence in a tribunal hearing for a work related matter and the first thing you get asked is "do you swear that what you say is the truth, etc .."
So it's a serious thing and I reckon the AFL is looking to make an example of Brown, as they did with $40K for Goodwin's gambling thing, so as to be a deterrent
Before we get the violins out too much for Brown - half of the $15K penalty is suspended - he only has to pay $7.5K now. For lying through his teeth to an official AFL tribunal hearing what does he expect - a medal for showing loyalty to an opponent who tried to gouge his eye out?
Hopefully, soon we will see players going to the tribunal and saying it like it is and then the culprit can cop his penalty sweet, as he should.