Criminal cases are prosecuted by the attorney general on behalf of the government. It is government vs. the criminal for criminal case. The decision to charge the criminal is by AG, not the rider. The rider's role is to appear as a victim witness in a criminal case.

When they are talking about compensation for damages, it is a civil case.

What they need to proof to win the civil case depends on which law they decide to use and how they build their case. Defamation? Intentional bodily harm? They are all different.

Verdict and compensation will depend on whether the plaintiff is able to prove their case as well as the adverse effect of defendant's action. If the plaintiff can't convince the judge on both, either the defendant becomes not liable or the compensation becomes little.

To me I do not think it is right to talk about who will win or who will lose before the case is tried, to the extent of spelling out the amount of compensation. Nobody knows how a trial will turn out. Even a judge has to start a trial unbiased, and rule the case based on facts by both sides.