Aye, Max is right. Copy your Planetside shortcut (not the .exe), rename it to whatever.
If you right click on your copied PS shortcut and choose Properties, you see this as the Target:
"C:\Program Files\Sony\Station\LaunchPad\LaunchPad.exe" /game:planetside
Just change it to:
"C:\Program Files\Sony\Station\LaunchPad\LaunchPad.exe" /game:planetside /batch:2007908 /plan:426
Then you're all set. I think you can use one PS installation for both, just by using different launch parameters.