As an attorney, your performance in the courtroom often times comes down to having the edge on your opponent. The edge can come in many forms.
For example, it could be having better evidence, better key witnesses, better preparedness, better research, better jurors, etc.
Many of these factors, you simply can’t help (e.g. better key witnesses). However, there are some factors (e.g. better research, preparedness, jurors) that you can tackle effectively by having the right tools to aide your case.