spath - // Andy I think professional fighters, especially those trained in MMA, should be punished more so than the average Joe for not only being in a fight with a public member, but for starting it and leaving without any reproduction or retaliation. //
As I pointed out in my answer, as soon as you start changing the application of the law based on individual circumstances, the law ceases to be effective.
If it were applied as you suggest, then who makes the decisions about the qualifications in terms of the assaulter's martial arts expertise, and how this impacted (no pun intended) on the situation involved.
It would tie courts up for weeks and months as legal arguments passed to and fro - the courts would be unable to try any other kind of case within weeks of this change which you advocate.
That is why the law applies without the recourse to analysis of individuals, it simply cannot function in that way.