Line reeeeally wants you to mount their skis at recommended, based on conversations I have had with their tech department. This has kind of been said already, but I imagine the reason they push it so hard is that anyone asking probably doesnt really know what they want. What they probably want is a ski that skis really well and can sometimes go rip the park. If brand were not as adamant about telling people to mount at recommended, more people would likely mount center. And then many people will complain that their skis dont perform well on "normal" slopes. That is my theory at least.
tldr: If you are a park skier who takes the occasional "other run" lap, center will treat you fine. If you ski everywhere, including the park, equally, recommended is probably the way to go.